LEA SYMBOLS® ETDRS Translucent Distance Charts (13 feet/4 meters)253333
An ETDRS chart with LEA SYMBOLS® and proportionally spaced (logMAR) lines; line sizes range from 13/104 to 13/5.2 (4/32 to 4/1.6) equivalent. The other equivalents featured on this chart are letter size, 20 foot, 6 meter, decimal, and LogMAR. Includes response key and instructions. Screen printed on styrene plastic for long-lasting durability.
Dimensions: Height 24.5" x Width 25.5" (62 cm x 65 cm).
Testing distance: 13 feet/4 meters.