Red and green sheets used for anti suppression. Full-sized sheets can be used for reading and other activities in books or on a computer screen.
Measures 8.5 x 11 inches.
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Red and green sheets used for anti suppression. Full-sized sheets can be used for reading and other activities in books or on a computer screen.
Measures 8.5 x 11 inches.
Red and green sheets used for anti suppression. Full-sized sheets can be used for reading and other activities in books or on a computer screen.
Measures 8.5 x 11 inches.
| Brands | Good Lite |
|---|
| Measures | 8.5 x 11 inches |
Sloan Letter charts calibrated to test visual acuity at an intermediate distance of 66 cm (26 in.).
This chart can either be wall mounted or used in an ESV 1200 , ESV 1500 , or a Model A illuminated cabinet.
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, 0.05 at 0.5 m and 0.3 at 3 m. 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, 3.25″ x 9″ (8.25 cm x 22.9 cm).
This double-sided near vision card combines proportionally-spaced lines on one and 50% spaced rectangle (Massachusetts Visual Acuity Test Format) on the other. Attached 16-inch (40 cm) measuring cord ensures proper screening distance. Includes flash cards and instructions.8 in x 10 in (20.3 cm x 25.4 cm).
16-inch, 40 cm testing distance.
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