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Your cart is empty.Original series ETDRS vision chart 1 can be displayed in the Good-Lite illuminating light box with the chart having proportionally spaced (geometric progression) lines; line sizes range from 20/200 to 20/10 (6/60 to 6/3) equivalent. Standardized format used in National Eye Institute clinical studies and in low vision evaluations that require accurate and repeatable visual acuity measurements. Chart measures 24.5" x 25.5" (62 cm x 65 cm). UV coated for long lasting durability. 13 feet, 4 meter testing distance.
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