{"title":"Contrast Sensitivity Tests \u0026 Charts","description":"\u003cp\u003eContrast sensitivity assesses the ability to distinguish low-contrast images in real-world conditions, differing from standard acuity tests; it's crucial for evaluating various eye conditions and individuals engaged in vision-demanding activities, such as athletes and pilots, now mandated by the FDA in clinical trials for new vision correction technologies.\u003c\/p\u003e","products":[{"product_id":"251100","title":"Flip Book: LEA SYMBOLS® Low Contrast Test - 10M Symbols","description":"\u003cp\u003eA test for quickly measuring low contrast visual acuity at 25%, 10%, 5%, 2.5%, and 1.25% contrast by measuring the distance at which the symbols are seen. 10M symbols correspond to visual acuity 0.10 at 1 meter, 0.05 at 0.5 meters and 0.3 at .3 meters. VA values are thus easy to calculate. This test includes a table for conversion to Snellen equivalent VA values. Includes a response key and 5 pages.\u003c\/p\u003e","brand":"Good-Lite","offers":[{"title":"Flip Book: LEA SYMBOLS® Low Contrast Test - 10M Symbols - Standard Order","offer_id":32568067096681,"sku":"251100","price":123.25,"currency_code":"USD","in_stock":true},{"title":"Flip Book: LEA SYMBOLS® Low Contrast Test - 10M Symbols - Mixed Order","offer_id":41838029078633,"sku":"251200","price":123.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-vision-testing-aids-flip-book-lea-symbols-low-contrast-test-10m-symbols-mixed-order-flip-book-lea-symbols-low-contrast-test-10m-symbols-251200-1210255349.jpg?v=1765086338"},{"product_id":"253500","title":"Cards: Hiding Heidi® Low Contrast Face Test","description":"\u003cp\u003eVisual communication is the most important communication method during the first year of life. The ability to detect objects of low contrast is an important component of the visual system. For example, facial expressions are mediated by faint shadows and changes in the contours of the mouth and eyes. Determining the levels of contrast that an infant can detect helps provide baseline data for evaluating future changes. For example, deviations from usual behavior may indicate disorders that leave vision at high contrast levels unaffected. Instructions are included.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe Hiding Heidi® Low Contrast Face Test is available in 2 different versions:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDouble Sided:\u003c\/strong\u003e Four cards printed on both sides in contrast levels: black, 25%, 10%, 5%, 2.5%, and 1.25%.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSingle Sided:\u003c\/strong\u003e Seven cards printed on one side in contrast levels: black, 25%, 10%, 5%, 2.5%, and 1.25%.\u003c\/p\u003e\n\u003cp\u003eDimensions: 9\" x 9\" (23 cm x 23 cm).\u003c\/p\u003e","brand":"Good-Lite","offers":[{"title":"Cards: Hiding Heidi® Low Contrast Face Test - Single Sided","offer_id":32568067588201,"sku":"253510","price":134.0,"currency_code":"USD","in_stock":true},{"title":"Cards: Hiding Heidi® Low Contrast Face Test - Double Sided","offer_id":32568067555433,"sku":"253500","price":123.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-253510-single-sided-hiding-heidi-low-contrast-face-test-253510-31346832310377.jpg?v=1709560262"},{"product_id":"253700","title":"Chart(Distance): ESV1200™ and ESV1500™ - LEA SYMBOLS® Low Contrast","description":"\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cspan data-preserver-spaces=\"true\" data-mce-fragment=\"1\"\u003eA low contrast test is a special way to measure how well eyes function in low light situations and\/or are able to distinguish objects from similarly colored or shaded backgrounds. Testing is identical to the measurement of visual acuity at a high contrast level. The 2.5% test is the most practical in clinical use. Available in 5 contrast levels: 1.25%, 2.5%, 5%, 10%, and 25%. This chart can either be wall mounted or used in an \u003c\/span\u003e\u003ca href=\"https:\/\/www.good-lite.com\/products\/esv1200\" class=\"editor-rtfLink\" data-mce-fragment=\"1\" target=\"_blank\"\u003e\u003cspan data-preserver-spaces=\"true\" data-mce-fragment=\"1\"\u003eESV1200™\u003c\/span\u003e\u003c\/a\u003e\u003cspan data-preserver-spaces=\"true\" data-mce-fragment=\"1\"\u003e, \u003c\/span\u003e\u003ca href=\"https:\/\/www.good-lite.com\/products\/esv1500\" class=\"editor-rtfLink\" data-mce-fragment=\"1\" target=\"_blank\"\u003e\u003cspan data-preserver-spaces=\"true\" data-mce-fragment=\"1\"\u003eESV1500™\u003c\/span\u003e\u003c\/a\u003e\u003cspan data-preserver-spaces=\"true\" data-mce-fragment=\"1\"\u003e, or a Model A+ illuminated cabinet. Each chart includes a response key and instructions.\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThese charts have line sizes ranging from 10\/63 to 10\/4 (3\/19 to 3\/1.2) equivalent. The other equivalents featured on these charts are letter size, 20 foot, 6 meter, decimal, and LogMAR.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Good-Lite","offers":[{"title":"Chart(Distance): ESV1200™ and ESV1500™ - LEA SYMBOLS® Low Contrast - 1.25% Contrast (10ft\/3m)","offer_id":32568067620969,"sku":"253700","price":59.75,"currency_code":"USD","in_stock":true},{"title":"Chart(Distance): ESV1200™ and ESV1500™ - LEA SYMBOLS® Low Contrast - 2.5% Contrast (10ft\/3m)","offer_id":32568067653737,"sku":"253800","price":59.75,"currency_code":"USD","in_stock":true},{"title":"Chart(Distance): ESV1200™ and ESV1500™ - LEA SYMBOLS® Low Contrast - 5% Contrast (10ft\/3m)","offer_id":32568067686505,"sku":"253900","price":59.75,"currency_code":"USD","in_stock":true},{"title":"Chart(Distance): ESV1200™ and ESV1500™ - LEA SYMBOLS® Low Contrast - 10% Contrast (10ft\/3m)","offer_id":32568067719273,"sku":"254000","price":59.75,"currency_code":"USD","in_stock":true},{"title":"Chart(Distance): ESV1200™ and ESV1500™ - LEA SYMBOLS® Low Contrast - 25% Contrast (10ft\/3m)","offer_id":32568067752041,"sku":"254100","price":59.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-253700-1-25-contrast-lea-symbols-sup-sup-translucent-low-contrast-charts-for-illuminated-cabinet-253700-31306889429097.jpg?v=1708104060"},{"product_id":"270400","title":"Flip Book: LEA NUMBERS® Low Contrast Test 10M","description":"\u003cp\u003eNow it is easy to measure, record, and detect changes in the transfer of visual information when the change only affects visual acuity at low contrast levels. These charts present numbers at the following contrast levels: 25%, 10%, 5%, 2.5%, and 1.25%. Each chart has 5 offset pages for easy flipping. Recording forms and instructions are included.\u003c\/p\u003e","brand":"Good-Lite","offers":[{"title":"Flip Book: LEA NUMBERS® Low Contrast Test 10M - Standard Order","offer_id":32568068833385,"sku":"270400","price":123.25,"currency_code":"USD","in_stock":true},{"title":"Flip Book: LEA NUMBERS® Low Contrast Test 10M - Mixed Order","offer_id":32568068866153,"sku":"270500","price":123.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-vision-testing-aids-flip-book-lea-numbers-low-contrast-test-10m-mixed-order-flip-book-lea-numbers-low-contrast-test-10m-270500-1210255299.jpg?v=1765086228"},{"product_id":"271500","title":"Chart(Distance): ESV1200™ and ESV1500™ - LEA NUMBERS® Low Contrast - (10ft\/3m)","description":"\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cspan data-preserver-spaces=\"true\"\u003eA low contrast test is a special way to measure how well eyes function in low light situations and\/or are able to distinguish objects from similarly colored or shaded backgrounds. Testing is identical to the measurement of visual acuity at high contrast levels. The 2.5% test is the most practical test in clinical use. These charts can either be wall mounted or used in an \u003c\/span\u003e\u003ca href=\"https:\/\/good-lite.com\/products\/esv1200\"\u003e\u003cspan data-preserver-spaces=\"true\"\u003eESV1200™\u003c\/span\u003e\u003c\/a\u003e\u003cspan data-preserver-spaces=\"true\"\u003e, \u003c\/span\u003e\u003ca href=\"https:\/\/good-lite.com\/products\/esv1500\"\u003e\u003cspan data-preserver-spaces=\"true\"\u003eESV1500™\u003c\/span\u003e\u003c\/a\u003e\u003cspan data-preserver-spaces=\"true\"\u003e, or a Model A+ illuminated cabinet. Available in 5 Contrast levels: 1.25%, 2.5%, 5%, 10%, and 25%.\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe line sizes on these charts range from 10\/63 to 10\/4 (3\/19 to 3\/1.2).\u003cbr\u003eThe other equivalents featured on these chart are letter size, 20 foot, 6 meter, decimal, and LogMAR.\u003c\/p\u003e\n\u003cp\u003eIncludes recording forms and instructions.\u003c\/p\u003e","brand":"Good-Lite","offers":[{"title":"Chart(Distance): ESV1200™ and ESV1500™ - LEA NUMBERS® Low Contrast - 1.25% Contrast (10ft\/3m)","offer_id":32568068898921,"sku":"271500","price":60.5,"currency_code":"USD","in_stock":true},{"title":"Chart(Distance): ESV1200™ and ESV1500™ - LEA NUMBERS® Low Contrast - 2.5% Contrast (10ft\/3m)","offer_id":32568068931689,"sku":"271600","price":60.5,"currency_code":"USD","in_stock":true},{"title":"Chart(Distance): ESV1200™ and ESV1500™ - LEA NUMBERS® Low Contrast - 5% Contrast (10ft\/3m)","offer_id":32568068964457,"sku":"271700","price":60.5,"currency_code":"USD","in_stock":true},{"title":"Chart(Distance): ESV1200™ and ESV1500™ - LEA NUMBERS® Low Contrast - 10% Contrast (10ft\/3m)","offer_id":32568068997225,"sku":"271800","price":60.5,"currency_code":"USD","in_stock":true},{"title":"Chart(Distance): ESV1200™ and ESV1500™ - LEA NUMBERS® Low Contrast - 25% Contrast (10ft\/3m)","offer_id":32568069029993,"sku":"271900","price":60.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-lea-vision-tests-1-25-lea-numbers-translucent-contrast-chart-lea-numbers-translucent-contrast-chart-set-271500-1182503787.jpg?v=1774389939"},{"product_id":"274200","title":"Chart(Distance): ESV3000™ and ESC2000™ - LEA NUMBERS® ETDRS Low Contrast - (13ft\/4m)","description":"\u003cp\u003eETDRS low contrast LEA NUMBERS® vision charts with proportionally spaced (geometric progression) lines. Features translucent low contrast letters with line sizes ranging from 13\/131 to 13\/5.2 (4\/40 to 4\/1.6) equivalent. The other equivalents featured on this chart are letter size, 20 foot, 6 meter, decimal, and LogMAR. Available in 2 contrast levels: 2.5% and 10%.\u003cspan data-preserver-spaces=\"true\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eNote: These charts can only be used with our \u003c\/span\u003e\u003c\/strong\u003e\u003ca href=\"https:\/\/good-lite.com\/products\/esv3000\"\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eESV3000™\u003c\/span\u003e\u003c\/strong\u003e\u003c\/a\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e or \u003c\/span\u003e\u003c\/strong\u003e\u003ca href=\"https:\/\/good-lite.com\/products\/esc2000\"\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eESC2000™\u003c\/span\u003e\u003c\/strong\u003e\u003c\/a\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e illuminated ETDRS cabinets.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/good-lite.com\/pages\/lea-symbols-the-gold-standard\"\u003eLEA SYMBOLS\u003csup\u003e®\u003c\/sup\u003e: The Gold Standard\u003c\/a\u003e\u003c\/p\u003e","brand":"Good-Lite","offers":[{"title":"Chart(Distance): ESV3000™ and ESC2000™ - LEA NUMBERS® ETDRS Low Contrast - 2.5% Contrast (13ft\/4m)","offer_id":32568069062761,"sku":"274200","price":123.25,"currency_code":"USD","in_stock":true},{"title":"Chart(Distance): ESV3000™ and ESC2000™ - LEA NUMBERS® ETDRS Low Contrast - 10% Contrast (13ft\/4m)","offer_id":32568069095529,"sku":"274300","price":123.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-illuminated-charts-chart-distance-esv3000-and-esc2000-lea-numbers-etdrs-low-contrast-13ft-4m-1210255339.jpg?v=1765086216"},{"product_id":"470200","title":"Neutral Density Bar: Large with Filter Slider","description":"\u003cp\u003eThe Neutral Density Filter Bar allows to easily measure afferent pupillary defects (APD) also called “diminished pupil reaction to light levels”. Provides the filter values: 0.3, 0.6, 0.9, 1.2, 1.5, 1.8 Density Log Units. Each filter is 1.5\" (38 mm) square with an overall bar size of 10\" by 1.5\" (25.3 cm by 3.8 cm). Comes with a handle for easy use and a case for storage.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSlider not included.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Good-Lite","offers":[{"title":"Default Title","offer_id":32664860655721,"sku":"470200","price":195.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-diagnostic-aids-neutral-density-bar-large-with-filter-slider-470200-1208413921.jpg?v=1764019050"},{"product_id":"500022","title":"Chart(Distance): ESV3000™ and ESC2000™ - ETDRS - Sloan Letter Low Contrast","description":"\u003cp\u003eETDRS low contrast Sloan Letter vision charts with proportionally spaced (geometric progression) lines. Features translucent low contrast letters with line sizes ranging from 13\/131 to 13\/6.5 (4\/40 to 4\/2) equivalent.The other equivalents featured on these charts are letter size, 20 foot, 6 meter, decimal, and LogMAR. Available in 5 contrast levels: 1.25%, 2.5%, 5%, 10% and 25%.\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eNote: These charts can only be used with our \u003ca href=\"https:\/\/www.good-lite.com\/products\/esv3000\"\u003eESV3000™\u003c\/a\u003e or \u003ca href=\"https:\/\/www.good-lite.com\/products\/esc2000\"\u003eESC2000™\u003c\/a\u003e illuminated ETDRS cabinets.\u003c\/b\u003e\u003c\/p\u003e\n\n\u003ch3\u003eAdditional Resources\u003c\/h3\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/500020AnswerKey.pdf\" target=\"_blank\"\u003eClick here for the 500020 Answer Key.\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/500021AnswerKey.pdf\" target=\"_blank\"\u003eClick here for the 500021 Answer Key.\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/500022AnswerKey.pdf\" target=\"_blank\"\u003eClick here for the 500022 Answer Key.\u003c\/a\u003e\u003c\/p\u003e","brand":"Good-Lite","offers":[{"title":"Chart(Distance): ESV3000™ and ESC2000™ - ETDRS - Sloan Letter Low Contrast - 1.25% Contrast (13ft\/4m)","offer_id":32568070963305,"sku":"500022","price":88.5,"currency_code":"USD","in_stock":true},{"title":"Chart(Distance): ESV3000™ and ESC2000™ - ETDRS - Sloan Letter Low Contrast - 2.5% Contrast (13ft\/4m)","offer_id":32568070897769,"sku":"500021","price":88.5,"currency_code":"USD","in_stock":true},{"title":"Chart(Distance): ESV3000™ and ESC2000™ - ETDRS - Sloan Letter Low Contrast - 2.5% Contrast - Mixed Order (13ft\/4m)","offer_id":42814679253097,"sku":"500021A","price":78.0,"currency_code":"USD","in_stock":true},{"title":"Chart(Distance): ESV3000™ and ESC2000™ - ETDRS - Sloan Letter Low Contrast - 5% Contrast (13ft\/4m)","offer_id":32568070865001,"sku":"500020","price":88.5,"currency_code":"USD","in_stock":true},{"title":"Chart(Distance): ESV3000™ and ESC2000™ - ETDRS - Sloan Letter Low Contrast - 10% Contrast (13ft\/4m)","offer_id":32568070832233,"sku":"500019","price":88.5,"currency_code":"USD","in_stock":true},{"title":"Chart(Distance): ESV3000™ and ESC2000™ - ETDRS - Sloan Letter Low Contrast - 25% Contrast (13ft\/4m)","offer_id":32568070996073,"sku":"500023","price":88.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-illuminated-charts-chart-distance-esv3000-and-esc2000-etdrs-sloan-letter-low-contrast-1216581431.jpg?v=1768418229"},{"product_id":"500330","title":"Chart(Distance): ESV3000™ and ESC2000™ - Evans Letter Low Contrast Test (ELCT)","description":"\u003cp\u003eThe Evans Letter Contrast Test (ELCT) chart is the first standardized test for letter contrast. The ELCT chart is designed to be used with either the \u003ca href=\"https:\/\/www.good-lite.com\/collections\/esv3000\/products\/esv3000\"\u003eESV3000™\u003c\/a\u003e or \u003ca href=\"https:\/\/www.good-lite.com\/products\/esc2000\"\u003eESC2000™\u003c\/a\u003e providing consistent lighting for improved testing results. The ELCT chart presents Sloan Letter, optotypes line size of 20\/630 with a testing distance of 1m. The varying contrast in sets of 3 letters of equal contrast level. All triplets are balanced for letter difficulty and differ in contrast by 0.15 log contrast step.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eELCT Chart 1\u003c\/strong\u003e contains 12 contrast levels ranging from standard 100% acuity to 1.65 log contrast or 2.24% contrast level. Studies show that 1.65 log contrast is the average letter contrast for the normal older population. (Weber Contrast calculation).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eELCT Chart 2\u003c\/strong\u003e presents 4 contrast levels from 1.8 to 2.25 log contrast.\u003c\/p\u003e\n\u003cp\u003eSet includes both Chart 1 and Chart 2.\u003c\/p\u003e\n\u003cp\u003eDimensions: Height 24.5\" x Width 25.5\" (62 cm x 65 cm).\u003c\/p\u003e","brand":"Good-Lite","offers":[{"title":"Chart(Distance): ESV3000™ and ESC2000™ - Evans Letter Low Contrast Test (ELCT) - Set (39\"\/1m)","offer_id":32568071454825,"sku":"500330","price":1850.0,"currency_code":"USD","in_stock":true},{"title":"Chart(Distance): ESV3000™ and ESC2000™ - Evans Letter Low Contrast Test (ELCT) - Chart 1 (39\"\/1m)","offer_id":32568071487593,"sku":"500331","price":1229.75,"currency_code":"USD","in_stock":true},{"title":"Chart(Distance): ESV3000™ and ESC2000™ - Evans Letter Low Contrast Test (ELCT) - Chart 2 (39\"\/1m)","offer_id":32568071520361,"sku":"500332","price":614.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-illuminated-charts-chart-distance-esv3000-and-esc2000-evans-letter-low-contrast-test-elct-1195577414.jpg?v=1759259981"},{"product_id":"736000","title":"Flip Book:  Sloan Letter Low Contrast","description":"\u003cp\u003eEasily measure, record, and detect changes in the transfer of visual information when the change affects only visual acuity at low contrast levels. Charts include the following contrast levels: 25%, 10%, 5%, 2.5%, and 1.25%. Features 5 offset pages for easy flipping. Each chart includes recording forms and instructions.\u003c\/p\u003e","brand":"Good-Lite","offers":[{"title":"Flip Book:  Sloan Letter Low Contrast - Standard Order","offer_id":32568079646825,"sku":"736000","price":123.25,"currency_code":"USD","in_stock":true},{"title":"Flip Book:  Sloan Letter Low Contrast - Mixed Order","offer_id":32568079679593,"sku":"737000","price":123.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-vision-testing-aids-flip-book-sloan-letter-low-contrast-standard-order-flip-book-sloan-letter-low-contrast-736000-1210255306.jpg?v=1765085266"},{"product_id":"251400","title":"Recording Form: Good-Lite Low Contrast","description":"\u003cp\u003eLow Contrast Recording Form. Sold as a pack of 25.\u003c\/p\u003e","brand":"Good-Lite","offers":[{"title":"Default Title","offer_id":32568091770985,"sku":"251400","price":10.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-low-contrast-recording-form-251400-31207766884457.jpg?v=1707813728"},{"product_id":"252900","title":"Cone Adaptation Test","description":"\u003cp\u003eThe test consists of 15, 2\" x 2\" (5 cm x 5 cm) red, blue, and white plastic chips designed to help parents, teachers, and doctors assess children’s visual difficulties in the twilight. The test situation is not a formal test of night vision but gives useful information on visual adaptation to lighting changes.\u003c\/p\u003e","brand":"Good-Lite","offers":[{"title":"Default Title","offer_id":32568092491881,"sku":"252900","price":68.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-vision-testing-aids-cone-adaptation-test-252900-1216801444.jpg?v=1768504690"},{"product_id":"253400","title":"Discs: LEA GRATINGS® Low Contrast Grating Acuity Test","description":"\u003cp\u003eThese discs measure contrast sensitivity curve based on 4 gratings at 2 contrast levels: 10% and 2.5% contrast. These 2 levels use 2 grating frequencies: the 10% level uses 0.5 cpcm and 8 cpcm while the 2.5% level uses 0.5 cpcm and 4 cpcm. Testing is based on finding the distance where the person is at the threshold in seeing the direction of the grating lines. Includes nomograms, instructions, recording forms, and 2 double-sided discs.\u003c\/p\u003e\n\u003cp\u003eDimensions: 8\" (20 cm) in diameter.\u003c\/p\u003e","brand":"Good-Lite","offers":[{"title":"Default Title","offer_id":32568092754025,"sku":"253400","price":387.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-co-lea-gratings-low-contrast-grating-acuity-test-253400-32461355974761.jpg?v=1732285232"},{"product_id":"254505","title":"Cards: Heidi Expressions® Test Game","description":"\u003cp\u003eSome children with brain damage-related vision loss may achieve near-normal results in routine vision tests (large visual field and normal or near-normal visual acuity), but cannot interpret facial expressions or recognize faces. The Heidi Expressions test game improves early evaluation of vision for communication. 18 cards per set.\u003c\/p\u003e\n\u003cp\u003eDimensions: 4\" x 4\" (10.16 cm x 10.16 cm).\u003c\/p\u003e","brand":"Good-Lite","offers":[{"title":"Default Title","offer_id":40505906200681,"sku":"254505","price":60.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-254505-heidi-expressions-test-game-254505-31307013226601.jpg?v=1712739255"},{"product_id":"258600","title":"LEA VISION TEST SYSTEM® Starter Kit For Assessment \u0026 Screening","description":"\u003cp\u003e\u003cstrong\u003eNote: \u003c\/strong\u003eNot all products are shown in the photo.\u003c\/p\u003e\n\u003cp\u003eLea Hyvärinen, MD, Ph.D., has created numerous vision assessment and screening products since designing her LEA SYMBOLS\u003csup\u003e®\u003c\/sup\u003e (apple, house, circle, square) in 1976. Over time, individualized eye chart variations using LEA SYMBOLS\u003csup\u003e®\u003c\/sup\u003e were created for various vision screening programs. Dr. Hyvärinen has a list of core products that she designed or prefers to use in her work. Not sure which assessment or screening test you want from Dr. Hyvärinen’s core products? You now have the opportunity to purchase 15 of the 48 core products Dr. Hyvärinen designed or uses in her practice in 1 convenient starter toolkit. You can use the 15 items in the LEA® VISION TEST SYSTEM Starter Kit for Assessment \u0026amp; Screening to screen or test the following:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVisual acuity\u003c\/li\u003e\n\u003cli\u003eContrast sensitivity\u003c\/li\u003e\n\u003cli\u003eCognitive Vision,\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe LEA® Core Tests Starter Toolkit for Assessment \u0026amp; Screening contains the following items including Dr. Hyvärinen’s USB.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003eThis starter toolkit includes the following:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.good-lite.com\/products\/251600\" target=\"_blank\"\u003e251600 - LEA SYMBOLS\u003csup\u003e®\u003c\/sup\u003e 3-D Puzzle Set\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca rel=\"noopener\" href=\"https:\/\/www.good-lite.com\/products\/252500\" target=\"_blank\"\u003e252500 - LEA SYMBOLS\u003csup\u003e®\u003c\/sup\u003e Playing Cards\u003c\/a\u003e\u003ca href=\"https:\/\/www.good-lite.com\/products\/252000\"\u003e\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.good-lite.com\/products\/252000\" target=\"_blank\"\u003e252000 - LEA SYMBOLS\u003csup\u003e®\u003c\/sup\u003e Near Vision Screener\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.good-lite.com\/products\/259900\" target=\"_blank\"\u003e259900 - LEA SYMBOLS\u003csup\u003e®\u003c\/sup\u003e Distance Vision Screener\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.good-lite.com\/products\/250150\" target=\"_blank\"\u003e250150 - LEA SYMBOLS\u003csup\u003e®\u003c\/sup\u003e 15-Line Distance Charts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.good-lite.com\/products\/250600\" target=\"_blank\"\u003e250600 - LEA SYMBOLS\u003csup\u003e®\u003c\/sup\u003e Single Symbol Book\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.good-lite.com\/products\/250800\" target=\"_blank\"\u003e250800 - LEA SYMBOLS\u003csup\u003e®\u003c\/sup\u003e Near Vision Card\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.good-lite.com\/products\/271100\" target=\"_blank\"\u003e271100 - LEA NUMBERS\u003csup\u003e®\u003c\/sup\u003e 15-Line Distance Charts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca rel=\"noopener\" href=\"https:\/\/www.good-lite.com\/products\/251100\" target=\"_blank\"\u003e251100 - LEA SYMBOLS\u003csup\u003e®\u003c\/sup\u003e Low Contrast Test, 10M\u003c\/a\u003e\u003ca href=\"https:\/\/www.good-lite.com\/products\/251100\"\u003e\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.good-lite.com\/products\/253500\" target=\"_blank\"\u003e253500 - Hiding Heidi Low Contrast Face Test\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.good-lite.com\/products\/254600\" target=\"_blank\"\u003e254600 - LEA RECTANGLES GAME\u003csup\u003e®\u003c\/sup\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.good-lite.com\/products\/254700\" target=\"_blank\"\u003e254700 - LEA MAILBOX GAME\u003csup\u003e®\u003c\/sup\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.good-lite.com\/products\/270900\" target=\"_blank\"\u003e270900 - LEA NUMBERS\u003csup\u003e®\u003c\/sup\u003e Near Vision Card\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca rel=\"noopener\" href=\"https:\/\/www.good-lite.com\/products\/what-and-how-does-this-child-see-2nd-edition?variant=32656885186665\" target=\"_blank\"\u003e792000 - What \u0026amp; How Does This Child See? Instructional USB\u003c\/a\u003e\u003ca href=\"https:\/\/www.good-lite.com\/products\/790000\"\u003e\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.good-lite.com\/products\/790000\" target=\"_blank\"\u003e790000 - \"Leo Learns by Doing\" DVD\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Good-Lite","offers":[{"title":"Default Title","offer_id":32568093343849,"sku":"258600","price":996.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-lea-vision-test-system-sup-sup-starter-kit-for-assessment-screening-258600-31306947723369.jpg?v=1708105155"},{"product_id":"300900","title":"Chart(Contrast): Mars Perceptrix Letter Low Contrast Test Set (16\"\/40cm)-(20\"\/50cm)","description":"\u003cp\u003eThe Mars Perceptrix Letter Contrast Test Set is unlike many other contrast tests that merely assess visual acuity using low contrast targets, the Mars Perceptrix low contrast test is a true contrast sensitivity measure that indicates the lowest contrasts your patients can perceive, rather than the smallest letters they can identify at some low, arbitrarily chosen contrast. With the Mars test, it is the contrast, and not the letter size, which diminishes from the beginning to the end of the charts.\u003c\/p\u003e\n\u003cp\u003eThe letters are large, ensuring that most patients, even those with low vision, can see them. And because research has consistently shown that large letters are identified by the most sensitive of the size-tuned spatial frequency channels from the visual system, the Mars Perceptrix contrast test accordingly yields the sensitivity of the most sensitive channel and the visual system as a whole.\u003c\/p\u003e\n\u003cp\u003eThe Mars Perceptrix test comes with 3 low contrast charts, instructions, and a storage pouch.\u003c\/p\u003e","brand":"Good-Lite","offers":[{"title":"Default Title","offer_id":32568095572073,"sku":"300900","price":598.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-co-mars-perceptrix-letter-contrast-test-set-300900-32461358202985.jpg?v=1732275879"},{"product_id":"300901","title":"Chart(Contrast): Mars Perceptrix Numbers Low Contrast Test Set (16\"\/40cm)-(20\"\/50cm)","description":"\u003cp\u003eThe Mars Perceptrix Numbers Contrast Test Set is unlike many other contrast tests that merely assess visual acuity using low contrast targets, the Mars Perceptrix low contrast test is a true contrast sensitivity measure that indicates the lowest contrasts your patients can perceive, rather than the smallest letters they can identify at some low, arbitrarily chosen contrast. With the Mars test, it is the contrast, and not the letter size, which diminishes from the beginning to the end of the charts.\u003c\/p\u003e\n\u003cp\u003eThe letters are large, ensuring that most patients, even those with low vision, can see them. And because research has consistently shown that large letters are identified by the most sensitive of the size-tuned spatial frequency channels from the visual system, the Mars Perceptrix contrast test accordingly yields the sensitivity of the most sensitive channel and the visual system as a whole.\u003c\/p\u003e\n\u003cp\u003eThe Mars Perceptrix test comes with 3 low contrast charts, instructions, and a storage pouch.\u003c\/p\u003e","brand":"Good-Lite","offers":[{"title":"Default Title","offer_id":32568095604841,"sku":"300901","price":598.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-co-mars-perceptrix-numbers-contrast-test-set-300901-32461358301289.jpg?v=1732277498"},{"product_id":"470550","title":"Neutral Density Bar","description":"\u003cp\u003eUsed to measure Afferent Pupillary Defects (APD) which is defined as diminished pupil reaction to light levels. It uses 6 standard ND levels for quantifying APD. The log units quantify the amount of light transmitted through the filter. Includes 6 filters rated as 0.3, 0.6, 0.9, 1.2, 1.5, and 1.8 log unit optical density values. The 0.3 ND filter is most useful for uncovering a borderline pupil defect.\u003c\/p\u003e\n\u003cp\u003eThe filter bar can be used in conjunction with the “Swinging Flashlight” test to detect and quantify the depth of any afferent conduction defect.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e#470550:\u003c\/strong\u003e Fits in shirt pockets. Includes leather slipcover. Overall bar is 6.5\" x 1\" (16.5cm long and 3 cm wide). Each filter measures 7\/8\" by 1\" (2.5cm x 3 cm).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e#151170:\u003c\/strong\u003e \u003cmeta charset=\"UTF-8\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe filter sizes on the Large ND bar are \u003c\/span\u003e1.5 inch (38mm) square. Overall bar is 1\u003cmeta charset=\"UTF-8\"\u003e0\" x 2\" (25.4cm long x 5.0cm wide).\u003c\/p\u003e","brand":"Good-Lite","offers":[{"title":"Neutral Density Bar: Small","offer_id":40541393027177,"sku":"470550","price":99.75,"currency_code":"USD","in_stock":true},{"title":"Neutral Density Bar: Large","offer_id":40541393059945,"sku":"151170","price":135.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-co-neutral-density-bar-large-neutral-density-bar-151170-32461395427433.jpg?v=1732275711"},{"product_id":"csv1000-test-instrument-viewer","title":"Illuminated Cabinet: CSV-1000® Test Instrument Viewer","description":"\u003ch3\u003eIntroducing the CSV-1000® Illuminated Viewer\u003c\/h3\u003e\n\u003cp\u003eEnhance your testing accuracy with the CSV-1000® illuminated viewer, designed for standardized contrast sensitivity and ETDRS acuity testing. This advanced instrument allows you to detect and quantify subtle changes in vision, ensuring precise assessments for your patients. With patented photocell circuitry, the CSV-1000® automatically monitors and calibrates testing light levels, guaranteeing consistent and reliable performance.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003eKey Features of the CSV-1000®\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eThe only self-standardized contrast sensitivity testing instrument available.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEffortlessly operated using a wireless remote control (included).\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFlexible placement options: stand it on a table, mount it on a wall, or use with an optional rolling floor stand (\u003ca href=\"https:\/\/store.good-lite.com\/products\/500004\"\u003esold separately\u003c\/a\u003e).\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cspan\u003eWhat’s Included:\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003eThe CSV-1000® instrument comes with a wireless remote control (battery included), and an instruction manual. Charts are sold separately.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eNot Included:\u003c\/h4\u003e\n\u003cp\u003eCharts and other accessories are sold seperately and can be viewed here:\u003cbr\u003e\u003ca href=\"https:\/\/store.good-lite.com\/search?q=csv1000\u0026amp;options%5Bprefix%5D=last\" title=\"CSV-1000 Charts and Accessories | Good-Lite\" rel=\"noopener\" target=\"_blank\"\u003eCSV-1000 Charts and Accessories\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch6\u003e\n\u003cbr\u003eCSV-1000®  is a registered trademark of Vector Vision Ocular Health Inc.\u003c\/h6\u003e","brand":"Good-Lite","offers":[{"title":"Default Title","offer_id":32568099831913,"sku":"CSV1000","price":4375.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-illuminated-cabinets-csv-1000-test-instrument-viewer-csv1000-1171897385.jpg?v=1749262182"},{"product_id":"500001","title":"Chart(Contrast): CSV-1000®S (8ft\/2.4m)","description":"\u003cp\u003eThe CSV-1000®S test is widely used for in or out-of-office screenings and for cataract evaluation. This test presents standard visual acuity from 20\/15 to 20\/200, two rows of spatial frequencies (6 and 12 cycles\/degree), and a real-world driver's scene. The test is useful for cataract documentation as it provides a standard acuity score, a functional acuity score, and a real-world simulation.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"UTF-8\"\u003eDimensions: Width 19.5\" x Height 17.5\" (49.53 cm x 44.45 cm).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis chart can \u003cspan style=\"text-decoration: underline;\"\u003eonly\u003c\/span\u003e be used in the \u003ca href=\"https:\/\/good-lite.com\/products\/csv1000-test-instrument-viewer\"\u003eCSV-1000® Test Instrument Viewer\u003c\/a\u003e and the \u003ca href=\"https:\/\/good-lite.com\/products\/csv1000-hg-test-instrument-viewer-with-glare-lights\"\u003eCSV-1000® HGT Test Instrument Viewer\u003c\/a\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\u003ch6\u003eCSV-1000®  is a registered trademark of Vector Vision Ocular Health Inc.\u003c\/h6\u003e","brand":"Good-Lite","offers":[{"title":"Default Title","offer_id":32568099864681,"sku":"500001","price":293.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-co-csv-1000-s-contrast-sensitivity-chart-500001-32461363642473.jpg?v=1732269948"},{"product_id":"500002","title":"Chart(Contrast): CSV-1000® - 1.5CPD Sine Wave Low Vision Test (8ft\/2.4m)","description":"\u003cp\u003eThe \u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eCSV-1000®\u003c\/span\u003e -1.5CPD Chart is a special test designed for Food and Drug Administration clinical trials, and evaluates low vision by testing one spatial frequency using a very large field size.\u003c\/p\u003e\n\u003cp\u003eAt the recommended test distance of 8 feet, the gratings test one spatial frequency of 1.5 cycles\/degree.\u003c\/p\u003e\n\u003cp\u003eDimensions: Width 19.5\" x Height 17.5\" (49.53 cm x 44.45 cm).\u003c\/p\u003e\n\u003cp\u003eThis chart can only be used in the \u003cspan\u003e\u003ca href=\"https:\/\/store.good-lite.com\/products\/csv1000-test-instrument-viewer\"\u003e \u003c\/a\u003e\u003ca href=\"https:\/\/store.good-lite.com\/products\/csv1000-test-instrument-viewer\" rel=\"noopener\" target=\"_blank\"\u003e\u003cspan\u003eCSV-1000®\u003c\/span\u003eTest Instrument Viewer\u003c\/a\u003e and the \u003cmeta charset=\"UTF-8\"\u003e \u003ca href=\"https:\/\/store.good-lite.com\/products\/csv1000-hgt\" rel=\"noopener\" target=\"_blank\"\u003e\u003cspan\u003eCSV-1000®HGT \u003c\/span\u003eTest Instrument Viewer\u003c\/a\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch6\u003eCSV-1000®  is a registered trademark of Vector Vision Ocular Health Inc.\u003c\/h6\u003e","brand":"Good-Lite","offers":[{"title":"Default Title","offer_id":32568099897449,"sku":"500002","price":293.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-co-csv-1000-1-5cpd-contrast-sensivity-chart-500002-32461363740777.jpg?v=1732270116"},{"product_id":"500003","title":"Chart(Distance): CSV-1000® - ETDRS Original Series - Sloan Letter (8ft\/2.4m)","description":"\u003cdiv\u003eThe CSV-1000ETDRS allows standardized testing of ETDRS and is the US standard for evaluating LogMAR acuity. \u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe CSV-1000ETDRS is smaller than other backlit systems for ETDRS testing and allows testing 20\/10 to 20\/200 at a distance of 8 feet or 20\/5 to 20\/100 at a distance of 4 meters. It is perfect for examination room use, where a 4 meter test distance is not available, or for clinical trials where testing beyond 20\/100 is not needed, such as refractive surgery or IOL trials. Reversed ETDRS tests are also available for testing at a distance of 4 meters with a mirror.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cstrong\u003eThis product is available in 3 variants:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003eChart(Distance): CSV-1000® - ETDRS Original Series - Sloan Letter - Chart 1 (8ft\/2.4m)\u003c\/li\u003e\n\u003cli\u003eChart(Distance): CSV-1000® - ETDRS Original Series - Sloan Letter - Chart 2 (8ft\/2.4m)\u003c\/li\u003e\n\u003cli\u003eChart(Distance): CSV-1000® - ETDRS Original Series - Sloan Letter - Chart R (8ft\/2.4m)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThis chart can \u003cspan style=\"text-decoration: underline;\"\u003eonly\u003c\/span\u003e be used in the \u003cspan\u003e\u003ca href=\"https:\/\/good-lite.com\/products\/csv1000-test-instrument-viewer\"\u003e\u003cspan\u003eCSV-1000®\u003c\/span\u003e Test Instrument Viewer\u003c\/a\u003e and the \u003cmeta charset=\"UTF-8\"\u003e \u003ca href=\"https:\/\/good-lite.com\/products\/csv1000-hg-test-instrument-viewer-with-glare-lights\"\u003e\u003cspan\u003eCSV-1000®\u003c\/span\u003eHGT Test Instrument Viewer\u003c\/a\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.good-lite-online.com\/pages\/what-is-etdrs\"\u003eWhat is ETDRS?\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch6\u003eCSV-1000® is a registered trademark of Vector Vision Ocular Health Inc.\u003c\/h6\u003e","brand":"Good-Lite","offers":[{"title":"Chart(Distance): CSV-1000® - ETDRS Original Series - Sloan Letter - Chart 1 (8ft\/2.4m)","offer_id":42797109805161,"sku":"500003-01","price":176.25,"currency_code":"USD","in_stock":true},{"title":"Chart(Distance): CSV-1000® - ETDRS Original Series - Sloan Letter - Chart 2 (8ft\/2.4m)","offer_id":42797109837929,"sku":"500003-02","price":176.25,"currency_code":"USD","in_stock":true},{"title":"Chart(Distance): CSV-1000® - ETDRS Original Series - Sloan Letter - Chart R (8ft\/2.4m)","offer_id":42797109870697,"sku":"500003","price":176.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-illuminated-charts-chart-distance-csv-1000-etdrs-original-series-sloan-letter-8ft-2-4m-1216413957.jpg?v=1768310351"},{"product_id":"csv1000-hgt","title":"Illuminated Cabinet: CSV-1000®HGT Test Instrument Viewer with Glare Lights","description":"\u003ch3\u003eIntroducing the CSV-1000® HGT Illuminated Viewer\u003c\/h3\u003e\n\u003cp\u003eThe gold standard in contrast sensitivity and glare testing has been updated and improved. The new CSV-1000® HGT now features a modern, streamlined design with integrated glare testing lights, enhancing its capabilities while maintaining its superior ability to detect and quantify subtle changes in vision. With patented photocell circuitry, the CSV-1000® HGT automatically monitors and calibrates light levels, ensuring consistent accuracy in every test.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003eKey Features of the CSV-1000® HGT:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eThe only self-standardized contrast sensitivity testing instrument on the market.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIntegrated glare testing lights for enhanced vision assessments.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOperated easily using the included wireless remote control.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eFlexible setup options: stand it on a table, mount it on a wall, or use it with a \u003ca href=\"https:\/\/store.good-lite.com\/products\/500004\" target=\"_blank\" rel=\"noopener\"\u003erolling floor stand\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003eWhat’s Included:\u003c\/h4\u003e\n\u003cp\u003eThe CSV-1000® HGT instrument comes with \u003cmeta charset=\"utf-8\"\u003ea wireless remote control (battery included), and an instruction manual. Charts sold separately.\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eCabinet dimensions: Width 27.4375\" x Height 21\" x Depth 3.9375\" (69.7 cm x 53.34 cm x 10 cm).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eNot Included:\u003c\/h4\u003e\n\u003cp\u003eCharts and other accessories are sold separately and can be viewed here:\u003cbr\u003e\u003ca href=\"https:\/\/store.good-lite.com\/search?q=csv1000\u0026amp;options%5Bprefix%5D=last\" title=\"CSV-1000 Charts and Accessories | Good-Lite\" rel=\"noopener\" target=\"_blank\"\u003eCSV-1000 Charts and Accessories\u003c\/a\u003e\u003c\/p\u003e","brand":"Good-Lite","offers":[{"title":"Default Title","offer_id":32568100585577,"sku":"CSV1000HG","price":4995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-illuminated-cabinets-csv-1000-hgt-test-instrument-viewer-with-glare-lights-csv1000hg-1171897374.jpg?v=1749262056"},{"product_id":"500052","title":"Chart(Contrast): CSV-1000®CA Contrast Acuity (CA) (8ft\/2.4m)","description":"\u003cp\u003eA chart with Sloan Letter optotypes in proportionally spaced (logMAR) lines; line sizes range from 20\/100 to 20\/10 in both high contrast and 10% contrast.\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eDimensions: Width 19.5\" x Height 17.5\" (49.53 cm x 44.45 cm).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis chart can be used in the \u003cspan data-mce-fragment=\"1\"\u003e\u003ca href=\"https:\/\/good-lite.com\/products\/csv1000-test-instrument-viewer\"\u003e\u003cspan\u003eCSV-1000®\u003c\/span\u003eTest Instrument Viewer\u003c\/a\u003e and the \u003ca href=\"https:\/\/good-lite.com\/products\/csv1000-hg-test-instrument-viewer-with-glare-lights\"\u003e\u003cspan\u003eCSV-1000®H\u003c\/span\u003eGT Test Instrument Viewer,\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch6\u003e\u003cbr\u003e\u003c\/h6\u003e\n\u003ch6\u003eCSV-1000®  is a registered trademark of Vector Vision Ocular Health Inc.\u003c\/h6\u003e","brand":"Good-Lite","offers":[{"title":"Default Title","offer_id":32568100683881,"sku":"500052","price":293.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-co-csv-1000-ca-contrast-acuity-ca-chart-500052-32461365739625.jpg?v=1732271026"},{"product_id":"587700","title":"Flip Book: Adult Near Vision Low Contrast Test (16\"\/40cm)","description":"\u003cp\u003eThis adult near vision low Contrast test features both ETDRS Format and Continuous Text in 100%, 25%, 10%, 5%, and 2.5% Contrast level. Continuous text letter sizes range from 20\/100 to 20\/20 (6\/30 to 6\/6) equivalent in each contrast level. ETDRS, format letters sizes range from 20\/400 to 20\/10 (6\/120 to 6\/3) equivalent in 17 increments for each contrast level. Each contrast level page is tabbed for easy access with included instructions. Printed on durable long-lasting styrene plastic and clear coated for added protection. This near vision contrast booklet contains 7 pages measuring 6.25\" x 6.25\" (15.8 cm x 15.8 cm).\u003c\/p\u003e\n\u003cp\u003eTesting distance: 16\"\/40 cm.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003eLearn More by reading the article: \u003ca href=\"https:\/\/store.good-lite.com\/blogs\/news\/what-is-etdrs\"\u003eWhat is ETDRS?\u003c\/a\u003e\u003c\/p\u003e","brand":"Good-Lite","offers":[{"title":"Default Title","offer_id":32568103403625,"sku":"587700","price":174.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-adult-near-contrast-test-587700-31306956275817.jpg?v=1712563814"},{"product_id":"610800","title":"Flip Book: LEA SYMBOLS® \u0026 LEA NUMBERS® - Pediatric Near Vision Low Contrast Book (16\"\/40cm)","description":"\u003cp\u003ePediatric Near Contrast Test Booklet with Contrast sensitivity levels of full Contrast (100%), 25%, 10%, 5%, 2.5% and 1.25% proportionally spaced (LogMAR) lines ranging from 20\/400 to 20\/16 using Michelson measures. One side of each page provides LEA SYMBOLS\u003csup\u003e®\u003c\/sup\u003e for testing of 3 to 5 year olds. The reverse side shows LEA NUMBERS\u003csup\u003e®\u003c\/sup\u003e for testing 5 to 8 year olds. Near Contrast testing provides an efficient means to detect or track ocular pathologies, including glaucoma, ARMD, diabetic retinopathy, cataract, and keratoconus. Low Contrast acuity loss measurement can used to demonstrate progress in disease treatment and help children’s parents understand the need for continued support.\u003c\/p\u003e\n\u003cp\u003eThis new Pediatric test is comparable to the unavailable adult Holladay Functional Acuity Contrast Test (F.A.C.T.™). It is also complementary with the \u003ca href=\"https:\/\/good-lite.com\/products\/587700\"\u003eAdult Near Contrast Test\u003c\/a\u003e. This Pediatric test is used at near (16 inches or 40 cm) which makes it much more likely to hold the attention of young patients. Administration is quicker than re-positioning a patient to use a distance Contrast test. Since both full Contrast and other Contrast levels are presented under the same conditions, the illumination is identical. This permits accurate comparison of the results at the various Contrast levels.\u003c\/p\u003e\n\u003cp\u003eIncluded is a scorecard and comprehensive instructions are also provided to support the plotting of a graph with the results from your child patients indicating the relationship of visual acuity and Contrast sensitivity. Normal ratios are also indicated to permit comparison. The booklet is printed on high-quality styrene plastic for long term durability.\u003c\/p\u003e","brand":"Good-Lite","offers":[{"title":"Default Title","offer_id":32568106156137,"sku":"610800","price":191.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-pediatric-low-contrast-near-610800-31206985957481.jpg?v=1707224580"},{"product_id":"what-and-how-does-this-child-see-2nd-edition","title":"Book: WHAT and HOW Does This Child See? 2nd Edition","description":"\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cspan data-preserver-spaces=\"true\"\u003e\"WHAT and HOW Does this Child See?\" is a question that is asked each day by many professionals in early intervention and education about children with disabilities. This book attempts to help you structure your questions so that you can look for answers together with other members of your team. This book is a collection of questions and answers from lectures presented by \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eLea Hyvärinen, MD, Ph.D., FAAP,\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e and \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eNamita Jacob, Ph.D.\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e, in a number of countries. It is written for teachers and members of early intervention and rehabilitation teams of children with disabilities, but it also provides valuable information to ophthalmologists, optometrists, neurologists, pediatricians, psychologists, and research workers in early intervention and special education.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eChapters include Planning and Conducting Visual Functioning Assessments, Ocular Motor Functions, Visual Acuity, Contrast Sensitivity, Visual Field, Color Vision, Motion Perception, Visual Adaptation, and Visual Information Processing.\u003c\/p\u003e\n\u003cp\u003eIf you would prefer to purchase on a USB (792000) click \u003ca href=\"https:\/\/www.good-lite.com\/products\/what-how-does-this-child-see-usb-key\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e2nd Edition, Printed 10\/2019.\u003c\/p\u003e","brand":"Good-Lite","offers":[{"title":"Default Title","offer_id":32656885153897,"sku":"791000","price":57.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-791000-what-and-how-does-this-child-see-2nd-edition-791000-31306968760425.jpg?v=1712738294"},{"product_id":"what-how-does-this-child-see-usb-key","title":"Book: WHAT \u0026 HOW Does This Child See? USB Key","description":"\u003cmeta charset=\"UTF-8\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\"WHAT and HOW Does this Child See?\" is a question that is asked each day by many professionals in early intervention and education about children with disabilities. The material on this USB attempts to help you structure your questions so that you can look for answers together with other members of your team. This USB is a collection of questions and answers from lectures presented by \u003cb data-mce-fragment=\"1\"\u003eLea Hyvärinen, MD, PhD, FAAP,\u003c\/b\u003e and \u003cb data-mce-fragment=\"1\"\u003eNamita Jacob, PhD\u003c\/b\u003e, in a number of countries. It is written for teachers and members of early intervention and rehabilitation teams of children with disabilities, but it also provides valuable information to ophthalmologists, optometrists, neurologists, pediatricians, psychologists, and research workers in early intervention and special education.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eChapters include: Planning and Conducting Visual Functioning Assessments, Ocular Motor Functions, Visual Acuity, Contrast Sensitivity, Visual Field, Color Vision, Motion Perception, Visual Adaptation, and Visual Information Processing.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eIf you would prefer to purchase the book version (791000) click \u003ca href=\"https:\/\/www.good-lite.com\/products\/what-and-how-does-this-child-see-2nd-edition\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e","brand":"Good-Lite","offers":[{"title":"Default Title","offer_id":32950193324137,"sku":"792000","price":72.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-what-how-does-this-child-see-usb-key-792000-31306999922793.jpg?v=1712738305"},{"product_id":"chart2020-vision-screening-software-featuring-dyop-technology","title":"Chart2020 PRO: Comprehensive Vision Software","description":"\u003cdiv\u003e\u003cstrong\u003eThe ultimate digital eye-chart system for clinical precision and versatility.\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eChart2020 PRO Version Software license includes an extensive library of visual acuity, binocularity, and balancing tests, as well as polarized targets for advanced visual assessment.*\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eComprehensive library of visual acuity tests and targets, binocularity and balancing, and polarized targets*\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eAuto-guided tests and reporting for Contrast Sensitivity****, (e)ETDRS and Stereo Acuity*** (Polarized and Color Separation Options)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eComprehensive library of educational media with the ability to add your own content\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eAll test strategies are easily and intuitively controlled and accessed from the 45-button IR Remote Controller*, your iPad®, any Android or iOS mobile device, a mouse, keyboard, or even an Apple TV remote\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eChart2020 PRO software adds polarized tests, self-scoring\/reporting Wizards, multi-user features, and a customizable media library\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eSQL Server Module optional add-on to link all lanes to a single database with EMH | EMR integrations. Patient data can be imported, and data points collected during Acuity, Contrast, and Stereo tests are available for use in customized business operations\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eOn-screen drag-and-drop Chart Editor to customize each chart to your exact letter choices\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e* Specialized medical-grade monitor required for polarized targets\u003c\/div\u003e\n\u003cdiv\u003e** Chart2020 remotes and accessories sold separately\u003c\/div\u003e\n\u003cdiv\u003e*** Stereo Acuity Wizard supports both polarized and color-separation modes\u003c\/div\u003e\n\u003cdiv\u003e**** Luminance calibration hardware required to ensure correct brightness for standardized outcomes\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/Chart2020_Logo_Color_Tagline_4_f324997a-765b-4e1f-9438-2dfb6d81949b_480x480.jpg?v=1620315464\" style=\"width: 250px; text-align: center;\"\u003e\u003c\/p\u003e\n\u003ch3\u003eAdditional Resources\u003c\/h3\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Chart2020 Instructions\" href=\"https:\/\/chart2020.com\/quick-start-guide-and-installation\/?v=35357b9c8fe4\" target=\"_blank\"\u003eChart2020 Guide\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/chart2020.com\/specifications\/?v=68caa8201064\" rel=\"noopener\" target=\"_blank\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/chart2020.com\/wp-content\/uploads\/2017\/05\/sales-us.pdf?v=68caa8201064\" rel=\"noopener\" target=\"_blank\"\u003eCHART2020 Brochure\u003c\/a\u003e\u003c\/p\u003e","brand":"Good-Lite","offers":[{"title":"Default Title","offer_id":39416087445609,"sku":"300660","price":1699.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-digital-chart2020-pro-comprehensive-vision-software-300660-1200745927.jpg?v=1761952653"},{"product_id":"mesopic-lenses-in-wire-frames","title":"Mesopic Testing Lens: ESV3000™ and ESC2000™ - Set in Wire Frames","description":"\u003cp data-mce-fragment=\"1\"\u003eThese lenses test mesopic contrast sensitivity, acuity, and glare. These lenses are used with the \u003ca href=\"https:\/\/www.good-lite.com\/products\/500000\" data-mce-fragment=\"1\" data-mce-href=\"https:\/\/www.good-lite.com\/products\/500000\"\u003eCSV1000™\u003c\/a\u003e, and \u003ca href=\"https:\/\/www.good-lite.com\/products\/esv3000\" data-mce-fragment=\"1\" data-mce-href=\"https:\/\/www.good-lite.com\/products\/esv3000\"\u003eESV3000™\u003c\/a\u003e instruments to reduce the light level from 85 to 3 cd\/m\u003csup data-mce-fragment=\"1\"\u003e2\u003c\/sup\u003e - the mesopic light level which is recommended by FDA to simulate the night driving conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Good-Lite","offers":[{"title":"Default Title","offer_id":41401337708649,"sku":"500058","price":454.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-co-mesopic-lenses-in-wire-frames-for-esv3000-and-esc2000-500058-32461396115561.jpg?v=1732275873"},{"product_id":"mesopic-testing-lenses-for-esv3000-and-esc2000-1-5","title":"Mesopic Testing Lens: ESV3000™, ESC2000™ and CSV-1000® - 1.5 Neutral Density Filter","description":"\u003cp class=\"MsoNormal\"\u003e\u003cspan data-ogsc=\"black\"\u003eMesopic lenses allow for testing with the CSV-1000, \u003cmeta charset=\"utf-8\"\u003eESV-3000, and ESC-2000 at lower luminance levels, simulating nighttime driving conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan data-ogsc=\"black\"\u003eWhen the vision testing devices are set to a light level of 85 cd\/m\u003csup\u003e2\u003c\/sup\u003e, the 1.5 ND lenses provide a mesopic light level of approximately 3.0 cd\/m\u003csup\u003e2\u003c\/sup\u003e for vision testing, which is the mesopic testing luminance recommended by the FDA for clinical trials.\u003c\/span\u003e\u003cspan data-ogsc=\"black\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan data-ogsc=\"black\"\u003e*ND refers to Neutral Density. Neutral Density lenses reduce all visible light spectrum equally so that vision testing at lower luminance levels can be as highly accurate as testing at the higher luminance levels.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan data-ogsc=\"black\"\u003e**Sold as a single lens.\u003c\/span\u003e\u003c\/p\u003e","brand":"Good-Lite","offers":[{"title":"Default Title","offer_id":42082073313385,"sku":"500053-01","price":238.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-vision-testing-aids-mesopic-testing-lens-esv3000-esc2000-and-csv-1000-2-0-neutral-density-filter-500053-02-1210732897.jpg?v=1765387055"},{"product_id":"mesopic-testing-lens-for-esv3000-and-esc2000-2-0","title":"Mesopic Testing Lens: ESV3000™, ESC2000™ and CSV-1000® - 2.0 Neutral Density Filter","description":"\u003cp class=\"MsoNormal\"\u003e\u003cspan data-ogsc=\"black\"\u003eMesopic lenses allow for testing with the CSV-1000, \u003cmeta charset=\"utf-8\"\u003eESV-3000, and ESC-2000 at lower luminance levels, simulating nighttime driving conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan data-ogsc=\"black\"\u003eWhen the vision testing devices are set to a light level of 85 cd\/m\u003csup\u003e2\u003c\/sup\u003e, the 2.0 ND lenses provide for a testing light level of approximately 0.85 cd\/m\u003csup\u003e2\u003c\/sup\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan data-ogsc=\"black\"\u003e*ND refers to Neutral Density. Neutral Density lenses reduce all visible light spectrum equally so that vision testing at lower luminance levels can be as highly accurate as testing at the higher luminance levels.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan data-ogsc=\"black\"\u003e**Sold as a single lens.\u003c\/span\u003e\u003c\/p\u003e","brand":"Good-Lite","offers":[{"title":"Default Title","offer_id":42084469669993,"sku":"500053-02","price":238.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-vision-testing-aids-mesopic-testing-lens-esv3000-esc2000-and-csv-1000-2-0-neutral-density-filter-500053-02-1210732897.jpg?v=1765387055"},{"product_id":"500051","title":"Chart(Contrast): CSV-1000®E (8ft\/2.4m)","description":"\u003cp\u003eThe CSV-1000®E test provides for 4 rows of sine-wave gratings. At the recommended test distance of 8 ft (2.5 meters), these gratings test the spatial frequencies of 3, 6, 12, and 18 cycles\/degree.\u003c\/p\u003e\n\u003cp\u003eThe \u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eCSV-1000®\u003c\/span\u003eE chart provides a full contrast sensitivity curve, which is very useful for the evaluation of ocular disease (particularly cataracts, glaucoma, optic neuritis, diabetes, and macular degeneration), contact lenses, and refractive surgery. For cataract evaluation\/documentation, a functional acuity score can be obtained directly from the test scoring sheet.\u003c\/p\u003e\n\u003cp\u003eThis product is available in 2 variants:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eChart(Contrast): CSV-1000®E - Regular Order (8ft\/2.4m) SKU 500051\u003c\/li\u003e\n\u003cli\u003eChart(Contrast): CSV-1000®E - Mixed Order (8ft\/2.4m) SKU 500053\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese charts can \u003cspan style=\"text-decoration: underline;\"\u003eonly\u003c\/span\u003e be used in the \u003cspan\u003e\u003ca href=\"https:\/\/store.good-lite.com\/products\/csv1000-test-instrument-viewer\" rel=\"noopener\" target=\"_blank\"\u003eCSV-1000® Test Instrument Viewer\u003c\/a\u003e and the \u003cmeta charset=\"UTF-8\"\u003e \u003ca href=\"https:\/\/store.good-lite.com\/products\/csv1000-hgt\" rel=\"noopener\" target=\"_blank\"\u003eCSV-1000® HGT Test Instrument Viewer\u003c\/a\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eScore sheets\/recording forms are available in the \u003cmeta charset=\"utf-8\"\u003eResources \u0026amp; Downloads Tab below.\u003c\/span\u003e\u003c\/p\u003e","brand":"Good-Lite","offers":[{"title":"Chart(Contrast): CSV-1000®E - Regular Order (8ft\/2.4m)","offer_id":42757434769513,"sku":"500051","price":293.0,"currency_code":"USD","in_stock":true},{"title":"Chart(Contrast): CSV-1000®E - Mixed Order (8ft\/2.4m)","offer_id":42757468094569,"sku":"500053","price":293.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-illuminated-charts-chart-contrast-csv-1000-e-8ft-2-4m-1211709380.jpg?v=1766078128"},{"product_id":"chartdistance-csv-1000®lh-lea-symbols®-8ft-2-4m","title":"Chart(Distance): CSV-1000®LH  - LEA SYMBOLS® (8ft\/2.4m)","description":"\u003cp\u003eThe CSV-1000LH LEA SYMBOLS® test face provides common symbols for the evaluation of illiterate or non-English speaking patients. The test is also widely used for the evaluation of children. The CSV-1000LH is in the ETDRS format. A patient prompt card is included.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis chart can \u003cspan style=\"text-decoration: underline;\"\u003eonly\u003c\/span\u003e be used in the \u003ca href=\"https:\/\/good-lite.com\/products\/csv1000-test-instrument-viewer\"\u003eCSV-1000® Test Instrument Viewer\u003c\/a\u003e and the \u003ca href=\"https:\/\/good-lite.com\/products\/csv1000-hg-test-instrument-viewer-with-glare-lights\"\u003eCSV-1000® HGT Test Instrument Viewer\u003c\/a\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch6\u003eCSV-1000®  is a registered trademark of Vector Vision Ocular Health Inc.\u003c\/h6\u003e","brand":"Good-Lite","offers":[{"title":"Default Title","offer_id":42797123305577,"sku":"500005-01","price":176.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-illuminated-charts-chart-distance-csv-1000-lh-lea-symbols-8ft-2-4m-500005-01-1217338775.jpg?v=1768850771"},{"product_id":"chartdistance-csv-1000®tume-tumbling-e-8ft-2-4m","title":"Chart(Distance): CSV-1000®TumE  - Tumbling E (8ft\/2.4m)","description":"\u003cp\u003eThe CSV-1000TumE test face provides a LogMAR test which presents the Letter E in various orientations. This test is very useful for evaluating illiterate or non-English speaking patients\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis chart can \u003cspan style=\"text-decoration: underline;\"\u003eonly\u003c\/span\u003e be used in the \u003ca href=\"https:\/\/good-lite.com\/products\/csv1000-test-instrument-viewer\"\u003eCSV-1000® Test Instrument Viewer\u003c\/a\u003e and the \u003ca href=\"https:\/\/good-lite.com\/products\/csv1000-hg-test-instrument-viewer-with-glare-lights\"\u003eCSV-1000® HGT Test Instrument Viewer\u003c\/a\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch6\u003eCSV-1000®  is a registered trademark of Vector Vision Ocular Health Inc.\u003c\/h6\u003e","brand":"Good-Lite","offers":[{"title":"Default Title","offer_id":42797167378537,"sku":"500005-02","price":176.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-illuminated-charts-chart-distance-csv-1000-tume-tumbling-e-8ft-2-4m-500005-02-1217338773.jpg?v=1768850650"},{"product_id":"chartdistance-csv-1000®landoltc-landolt-c-8ft-2-4m","title":"Chart(Distance): CSV-1000®LandoltC  - Landolt \"C\" (8ft\/2.4m)","description":"\u003cp\u003eThe CSV-l000SLanC test face provides the same tests as the standard CSV-1000S, except that the acuity test is presented in Landolt C format. This test is very useful when testing patients who cannot read the English alphabet.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis chart can \u003cspan style=\"text-decoration: underline;\"\u003eonly\u003c\/span\u003e be used in the \u003ca href=\"https:\/\/store.good-lite.com\/products\/csv1000-test-instrument-viewer\"\u003eCSV-1000® Test Instrument Viewer\u003c\/a\u003e and the \u003ca href=\"https:\/\/store.good-lite.com\/products\/csv1000-hg-test-instrument-viewer-with-glare-lights\"\u003eCSV-1000® HGT Test Instrument Viewer\u003c\/a\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch6\u003eCSV-1000®  is a registered trademark of Vector Vision Ocular Health Inc.\u003c\/h6\u003e","brand":"Good-Lite","offers":[{"title":"Default Title","offer_id":42797175275625,"sku":"500005-03","price":176.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-illuminated-charts-chart-distance-csv-1000-landoltc-landolt-c-8ft-2-4m-500005-03-1216724020.jpg?v=1768497310"},{"product_id":"chartdistance-csv-1000®hotv-hotv-8ft-2-4m","title":"Chart(Distance): CSV-1000®HOTV  - HOTV (8ft\/2.4m)","description":"\u003cp\u003eThe CSV- 1000HOTV test face provides a LogMAR test in which only four letters are used; H, O, T and V. This test is very useful for evaluating children or patients which commonly reverse the appearance of objects. These letters were chosen because all are symmetric along the vertical axis. A prompt card is provided.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis chart can \u003cspan style=\"text-decoration: underline;\"\u003eonly\u003c\/span\u003e be used in the \u003ca href=\"https:\/\/good-lite.com\/products\/csv1000-test-instrument-viewer\"\u003eCSV-1000® Test Instrument Viewer\u003c\/a\u003e and the \u003ca href=\"https:\/\/good-lite.com\/products\/csv1000-hg-test-instrument-viewer-with-glare-lights\"\u003eCSV-1000® HGT Test Instrument Viewer\u003c\/a\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch6\u003eCSV-1000®  is a registered trademark of Vector Vision Ocular Health Inc.\u003c\/h6\u003e","brand":"Good-Lite","offers":[{"title":"Default Title","offer_id":42797180420201,"sku":"500005-04","price":176.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-illuminated-charts-chart-distance-csv-1000-hotv-hotv-8ft-2-4m-500005-04-1217338771.jpg?v=1768850530"},{"product_id":"chartdistance-csv-1000®-etdrs-original-series-sloan-letter-8ft-2-4m-copy","title":"Chart(Contrast): CSV-1000®LV - Low Vision (8ft\/2.4m)","description":"\u003cdiv\u003eThe CSV-l000LV is designed for evaluating patients who have worse than 20\/70 acuity. At a test distance of 1 Meter, the letter size is equivalent to 20\/630 ETDRS LogMAR acuity. This test presents letters at 8 contrast levels.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cbr\u003eThe unique design of the CSV-l000LV matches the visual capability of low vision patients and provides for a more sensitive and reliable test.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cbr\u003eThe CSV-l000LV improves the office efficiency for evaluating low vision patients. The test is very fast because of the specific contrast levels chosen for the test and because row isolation eliminates the fixation problems encountered with other tests.\u003cbr\u003eNo special lighting or lighting calibration is required for the examination. Further, when needed, the test can easily be moved closer to the patient without adjusting the lighting.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cbr\u003eThe CSV-1000LV can also be used to test patients who have good acuity (better than 20\/70). For these patients, the test distance should be 3 meters.\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThis product is available in 2 variants:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCSV-1000LV-C: Random Order 1\u003c\/li\u003e\n\u003cli\u003eCSV-1000LV-V: Random Order 2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThis chart can \u003cspan style=\"text-decoration: underline;\"\u003eonly\u003c\/span\u003e be used in the \u003cspan\u003e\u003ca href=\"https:\/\/good-lite.com\/products\/csv1000-test-instrument-viewer\"\u003e\u003cspan\u003eCSV-1000®\u003c\/span\u003e Test Instrument Viewer\u003c\/a\u003e and the \u003cmeta charset=\"UTF-8\"\u003e \u003ca href=\"https:\/\/good-lite.com\/products\/csv1000-hg-test-instrument-viewer-with-glare-lights\"\u003e\u003cspan\u003eCSV-1000®\u003c\/span\u003eHGT Test Instrument Viewer\u003c\/a\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch6\u003eCSV-1000®  is a registered trademark of Vector Vision Ocular Health Inc.\u003c\/h6\u003e","brand":"Good-Lite","offers":[{"title":"Chart(Contrast): CSV-1000®LV-V Low Vision - Random Order 1 (8ft\/2.4m)","offer_id":42797196673129,"sku":"500006-01","price":293.0,"currency_code":"USD","in_stock":true},{"title":"Chart(Contrast): CSV-1000®LV-C Low Vision - Random Order 2 (8ft\/2.4m)","offer_id":42797196705897,"sku":"500006-02","price":293.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-illuminated-charts-chart-contrast-csv-1000-lv-v-low-vision-random-order-1-8ft-2-4m-chart-contrast-csv-1000-lv-low-vision-8ft-2-4m-500006-01-1217338769.jpg?v=1768850410"},{"product_id":"chartcontrast-csv-1000®rn-low-vision-8ft-2-4m","title":"Chart(Contrast): CSV-1000®RN - Low Vision (8ft\/2.4m)","description":"\u003cdiv\u003eThe CSV-l000RN is designed for evaluating patients who have worse than 20\/70 acuity. At a test distance of 1 Meter, the number size is equivalent to 20\/630 ETDRS LogMAR acuity. This test presents numbers at 8 contrast levels.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cbr\u003eThe unique design of the CSV-l000RN matches the visual capability of low vision patients and provides for a more sensitive and reliable test.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cbr\u003eThe CSV-l000RN improves the office efficiency for evaluating low vision patients. The test is very fast because of the specific contrast levels chosen for the test and because row isolation eliminates the fixation problems encountered with other tests.\u003cbr\u003eNo special lighting or lighting calibration is required for the examination. Further, when needed, the test can easily be moved closer to the patient without adjusting the lighting.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cbr\u003eThe CSV-1000RN can also be used to test patients who have good acuity (better than 20\/70). For these patients, the test distance should be 3 meters.\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThis product is available in 2 variants:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCSV-1000RN-8: Random Order 1\u003c\/li\u003e\n\u003cli\u003eCSV-1000RN-5: Random Order 2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThis chart can \u003cspan style=\"text-decoration: underline;\"\u003eonly\u003c\/span\u003e be used in the \u003cspan\u003e\u003ca href=\"https:\/\/good-lite.com\/products\/csv1000-test-instrument-viewer\"\u003e\u003cspan\u003eCSV-1000®\u003c\/span\u003e Test Instrument Viewer\u003c\/a\u003e and the \u003cmeta charset=\"UTF-8\"\u003e \u003ca href=\"https:\/\/good-lite.com\/products\/csv1000-hg-test-instrument-viewer-with-glare-lights\"\u003e\u003cspan\u003eCSV-1000®\u003c\/span\u003eHGT Test Instrument Viewer\u003c\/a\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch6\u003eCSV-1000®  is a registered trademark of Vector Vision Ocular Health Inc.\u003c\/h6\u003e","brand":"Good-Lite","offers":[{"title":"Chart(Contrast): CSV-1000®RN-8 Low Vision - Random Order 1 (8ft\/2.4m)","offer_id":42797215219817,"sku":"500007-01","price":293.0,"currency_code":"USD","in_stock":true},{"title":"Chart(Contrast): CSV-1000®RN-5 Low Vision - Random Order 2 (8ft\/2.4m)","offer_id":42797215252585,"sku":"500007-02","price":293.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-illuminated-charts-chart-contrast-csv-1000-rn-low-vision-8ft-2-4m-1217338768.jpg?v=1768850290"},{"product_id":"chartcontrast-csv-1000®rs-8ft-2-4m","title":"Chart(Contrast): CSV-1000®RS (8ft\/2.4m)","description":"\u003cp\u003eThe CSV-1000RS test face is used widely for screening refractive surgery patients. The test presents ETDRS LogMAR acuity from 20\/10 to 20\/100 and one row of spatial frequency at 12 cycles\/degree.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eThe patient can be easily screened in the examination chair for ETDRS acuity and contrast sensitivity. If a contrast sensitivity deficit is found, retesting the patient with all four spatial frequencies using the CSV-1000E is recommended.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"UTF-8\"\u003eDimensions: Width 19.5\" x Height 17.5\" (49.53 cm x 44.45 cm).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis chart can \u003cspan style=\"text-decoration: underline;\"\u003eonly\u003c\/span\u003e be used in the \u003ca href=\"https:\/\/good-lite.com\/products\/csv1000-test-instrument-viewer\"\u003eCSV-1000® Test Instrument Viewer\u003c\/a\u003e and the \u003ca href=\"https:\/\/good-lite.com\/products\/csv1000-hg-test-instrument-viewer-with-glare-lights\"\u003eCSV-1000® HGT Test Instrument Viewer\u003c\/a\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch6\u003eCSV-1000®  is a registered trademark of Vector Vision Ocular Health Inc.\u003c\/h6\u003e","brand":"Good-Lite","offers":[{"title":"Default Title","offer_id":42797233012841,"sku":"500009","price":293.0,"currency_code":"USD","in_stock":true}]}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/collections\/253400_lg.png?v=1635970071","url":"https:\/\/store.good-lite.com\/en-canada\/collections\/contrast-sensitivity\/vector-vision.oembed?page=2","provider":"Good-Lite Co","version":"1.0","type":"link"}