ETDRS Original Series Chart R

Item #: ETDRS13

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ETDRS eye chart - Original series chart R with 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.

ETDRS13 Answer Key

13 feet, 4 meteer testing distance.

Chart measures 24.5" by 25.5".

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