Good-Lite Good Lite LEA Symbols® Low Contrast Symbols Chart, 1.25%
"Features of the Good Lite LEA Symbols® Low Contrast Symbols Chart: Testing is identical to the measurement of visual acuity at high contrast level i.e., to measure the smallest size of the optotypes that an individual can recognize. Available in 5 contrast levels: 1.25%, 2.5%, 5%, 10% and 25%. Each chart includes response key, flash cards, recording forms, and instructions. Chart size is 9"" x 14"" (22.9 cm x 35.6 cm). 10 feet, 3 meter testing distance." crackcrackcrackcrack
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