LEA SYMBOLS ® Low Contrast Test, 10M

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Test for quick measurement of low contrast visual acuity at 25%, 10%, 5%, 2.5%, and 1.25% contrast by measuring the distance where the symbols are seen.
10M symbols correspond to visual acuity 0.10 at 1 m, 0.5 m, and 0.3 at 3 m. Test includes a response key, recording forms, and instructions. 6 pages, 3.25" x 9" (8.25 cm x 22.9 cm).. . . . . . . . . . . . . . . . . . . . . . . . . . . . 251100
Mixed Order . . . . . . . . . . . . . . . . . . .251200