LEA NUMBERS ETDRS distance chart with proportionally spaced (logMAR); line sizes range from 20/200 to 20/8 (6/60 to 6/2.4) equivalent, 0.10 to 2.50.
Available in three different versions of mixed/scrambled order when repetitive testing are involved. These charts fit ESV3000 Standardized ETDRS illuminated cabinet.
LEA NUMBERS Standard Chart is also available in a thinner translucent chart that can be easily rolled up.
13 feet/4 meters testing distance.