Lea Symbols® Low Contrast Test 10M
Test for quick measurement of low contrast visual acuity at 25%, 10%, 5%, 2.5%, and 1.25% contrast by measuring the distance at which the symbols are seen.
10M symbols correspond to visual acuity 0.10 at 1 meter, 0.05 at 0.5 meters and 0.3 at .3 meters.
VA values are thus easy to calculate.
Test includes a table for conversion to Snellen equivalent VA values, a response keys and instructions.
6 pages,
Lea Symbols® Low Contrast Test 10M