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LEA SYMBOLS® distance visual acuity test for the large ETDRS Illuminator Cabinet (#93080).
Proportionally spaced (logMAR); line sizes range from 20/200 to 20/8 (6/60 to 6/2.4) equivalent, 0.10 to 2.50. Includes response key and instructions. Chart measures 24.5″ x 25.5″ (62 cm x 65 cm).
13 feet/4 meters testing distance.