LEA SYMBOLS distance visual acuity test for the ETDRS Illuminator Cabinet. 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).
Available in 2 different versions: The Standard ETDRS style chart is screen printed on .010 thick styrene plastic making the chart more rigid. The Roll-Up ETDRS style chart is screen printed on .015 thick styrene plastic allowing the chart to be rolled up for easy transporting or storage. Both are UV coated for long lasting durability.
10 feet/3 meters testing distance.