ETDRS 10% low contrast LEA NUMBERS® vision chart 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.

Dimensions: Height 24.5" x Width 25.5" (62 cm x 65 cm).

Testing distance: 13 feet/4 meters.

Note: These charts can only be used with our ESV3000™ or ESC2000™ illuminated ETDRS cabinets.