LEA NUMBERS® ETDRS Distance Charts with proportionally spaced (logMAR) lines; line sizes ranging from 13/131 to 13/5.2 (4/40 to 4/1.6) equivalent. The other equivalents featured on these charts are letter size, 20 foot, 6 meter, decimal, and LogMAR.
Available in three different versions of mixed/scrambled order when repetitive testing is indicated. These charts fit in the ESV3000 Standardized ETDRS illuminated cabinet and the ESC2000 Illuminated ETDRS Clinical Trial Cabinet.
Test distance: 13 feet/4 meters.