{"title":"VT - Accommodation and Convergence","description":"Accommodation is the reflex ability for the eyes to focus onto an object or image at near, and then at distance. Convergence is the ability for the eyes to work together to focus on an object or image. Here you'll find all your accommodative and convergence products for your patients and your practice.","products":[{"product_id":"151500","title":"Accommodation: Near Point Rule and Cards","description":"\u003cp\u003eNear Point Accommodation Rule is the point closest to the bridge of the nose where convergence and binocular single vision can no longer be maintained as an object approaches. Also known as Accommodation and R-50 Rule, The Near Point Rule measures 50 cm long, 10 mm square, it is engraved with Centimeters, Inches, Diopter Scales, and Duane Age (the mean of the near point of accommodation at different ages according to Duane) with the sliding cardholder.\u003c\/p\u003e\n\u003cp\u003eMade of gray opaque plastic with white figures, the rules are light, easily handled, and are pleasant and agreeable for the examiner and patient to touch. The white lettering on gray makes the markings easy to read.\u003c\/p\u003e","brand":"Good-Lite","offers":[{"title":"Accommodation: Near Point Rule","offer_id":32755183616105,"sku":"151500","price":104.0,"currency_code":"USD","in_stock":true},{"title":"Accommodation: Near Point Rule Replacement Cards","offer_id":32755183648873,"sku":"671200","price":22.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-151500-accommodation-near-point-rule-accommodation-near-point-rule-151500-31306985799785.jpg?v=1712563580"},{"product_id":"537800","title":"RAF (Royal Air Force Rule) Convergence Rule","description":"\u003cp\u003eThe RAF Rule (Royal Air Force Rule) provides a binocular gauge to measure Objective and Subjective Convergence as well as accommodation in 1 mm increments. The RAF Rule consists of a 50 cm long rule with a slider holding a rotating four-sided cube. Each side has a different target: the first has a vertical line with a central dot for convergence fixation and the other provides a limited number of lines of near-reading examples.\u003c\/p\u003e\n\u003cp\u003eA rest is provided for the cheek to ensure consistency and proper height for the patient. Some studies have shown greater consistency of the NPC when measured with the RAF Rule compared to using a pencil or finger.\u003c\/p\u003e\n\u003cp\u003eThis instrument is used for determining the objective and subjective convergence points, examining the accommodation, and determining the master eye. The RAF Rule is useful for both diagnosis and treatment.\u003c\/p\u003e\n\u003cp\u003eThis instrument has four sides that have different measurements or functions:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOne side features diopter measurements from 20 to 2\u003c\/li\u003e\n\u003cli\u003eOne side features a ruler from 5 to 50 centimeters\u003c\/li\u003e\n\u003cli\u003eOne side that tests ages 8 through 48\u003c\/li\u003e\n\u003cli\u003eOne side that tests for convergence, normal, reduced, and defective\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Good-Lite","offers":[{"title":"Default Title","offer_id":32568101896297,"sku":"Z-537800","price":345.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-raf-royal-air-force-rule-convergence-rule-537800-30792653013097.png?v=1705095183"},{"product_id":"good-lite-eccentric-circle","title":"Eccentric Circles: 1 Pair","description":"\u003cp\u003e\u003cstrong\u003e710506 \u0026amp; 710508\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCentral anti-suppression check. The word FOCUS is seen by both eyes.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFixation disparity check. Small hash mark on the top of the outer ring on one card, and on the bottom of the ring on the opposite card to help improve accurate alignment and help reduce fixation disparity.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e710507 \u0026amp; 710509 \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCentral anti-suppression check. The word FUSE is only seen by one eye, the word TEXT is seen by the other eye, and the word THIS is seen by both eyes.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFixation disparity check. Small hash mark on the left of the outer ring on one card, and on the right of the ring on the opposite card to help improve accurate alignment and help reduce fixation disparity.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eConvergence and divergence training when red\/green glasses are used. Ex. If the green card is on the right and the green filter is over the left, divergence is done when fusing the two images.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis product is available in white opaque paper, or clear plastic.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eAdditional Resources\u003c\/h4\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/files.good-lite.com\/uZaXpKJzwVE\" title=\"Guidelines\" rel=\"noopener\" target=\"_blank\"\u003eEccentric Circles Guidelines\u003c\/a\u003e\u003c\/p\u003e","brand":"Good-Lite","offers":[{"title":"Eccentric Circles: Black-Clear, 1 Pair","offer_id":32664398889065,"sku":"710506","price":5.25,"currency_code":"USD","in_stock":true},{"title":"Eccentric Circles: Red\/Green-Clear, 1 Pair","offer_id":32664398954601,"sku":"710507","price":6.5,"currency_code":"USD","in_stock":true},{"title":"Eccentric Circles: Black-Paper, 1 Pair","offer_id":32681118826601,"sku":"710508","price":4.25,"currency_code":"USD","in_stock":true},{"title":"Eccentric Circles: Red\/Green-Paper, 1 Pair","offer_id":32681125412969,"sku":"710509","price":4.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-therapeutic-aids-eccentric-circles-1-pair-1208818436.jpg?v=1764083968"},{"product_id":"convergence-3-dot-card","title":"Convergence 3 Dot Double-Sided Card","description":"\u003cp\u003eAlso known as the Albee Card, these double-sided convergence cards feature 3 proportionally spaced dots printed on both sides. One side is printed in red while the other is printed in blue. Convergence is tested by having the patient look at one dot then quickly move to the next one.\u003c\/p\u003e\n\u003cp\u003eAvailable in packs of 10 or 50, or as a single card.\u003c\/p\u003e","brand":"Good-Lite","offers":[{"title":"Convergence 3 Dot Double-Sided Card","offer_id":41825311719529,"sku":"108801","price":4.25,"currency_code":"USD","in_stock":true},{"title":"Convergence 3 Dot Double-Sided Card, 10 pack","offer_id":39812631724137,"sku":"108810","price":21.5,"currency_code":"USD","in_stock":true},{"title":"Convergence 3 Dot Double-Sided Card, 50 pack","offer_id":39812631756905,"sku":"108850","price":96.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-therapeutic-aids-convergence-3-dot-double-sided-card-convergence-3-dot-double-sided-card-108801-1210255277.jpg?v=1765085628"},{"product_id":"z-axis-accommodative-rock-chart-clear-near-cards-single","title":"Z-Axis Accommodative Rock Chart","description":"\u003cp\u003eThese Z-axis Accommodative Rock Charts are simple tools to help patients develop accommodative facility and control. They can be prescribed as simple home-based exercises to help patients experience responsibility and control over their focusing mechanisms.\u003c\/p\u003e\n\u003cp\u003eBy arranging a distant chart and a transparent near-card directly in front of one another, the patient becomes aware of the ability to shift the accommodative plane of focus from distance to near, and to any point in between. As they bring one plane into focus, they are able to observe the other plane blurring out of focus simultaneously. This arrangement isolates the z-axis from the x- and y-axes, high-lighting the focusing mechanism as a distinct experience from eye-tracking.\u003c\/p\u003e\n\u003cp\u003eThese charts can be provided as home exercises through primary care optometrists, or as a component of a vision therapy program. It provides a learning experience for patients with accommodative dysfunctions as well as emerging presbyopia.\u003c\/p\u003e\n\u003cp\u003ePatient-oriented instructions are included.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ci\u003eInstruction set and charts developed with Samantha Slotnick, OD, FAAO, FCOVD.\u003c\/i\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"Good-Lite","offers":[{"title":"Z-Axis Accommodative Rock Chart: Distance Styrene Charts, Single","offer_id":42542172602473,"sku":"710501","price":8.5,"currency_code":"USD","in_stock":true},{"title":"Z-Axis Accommodative Rock Chart: Paper Distance Charts, Single","offer_id":42542172635241,"sku":"710512","price":2.0,"currency_code":"USD","in_stock":true},{"title":"Z-Axis Accommodative Rock Chart: Clear Bullseye, Single","offer_id":42542172700777,"sku":"710505","price":5.25,"currency_code":"USD","in_stock":true},{"title":"Z-Axis Accommodative Rock Chart: Clear Near Cards, Single","offer_id":42542172831849,"sku":"710503","price":4.0,"currency_code":"USD","in_stock":true},{"title":"Z-Axis Accommodative Rock Chart: Opaque Near Cards, Single","offer_id":42542172864617,"sku":"710513","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/files\/good-lite-therapeutic-aids-z-axis-accommodative-rock-charts-1193745908.jpg?v=1758739192"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4578\/6729\/collections\/710501_md.jpg?v=1636044086","url":"https:\/\/store.good-lite.com\/en-canada\/collections\/vt-accommodation-and-convergence\/vision-therapy.oembed","provider":"Good-Lite Co","version":"1.0","type":"link"}