Now it is easy to measure, record, and detect changes in the transfer of visual information when the change only affects visual acuity at low contrast levels. These charts present numbers at the following contrast levels: 25%, 10%, 5%, 2.5%, and 1.25%. Each chart has 5 offset pages for easy flipping. Recording forms and instructions are included.
Dimensions: 9" x 3.25" (22.9 cm x 8.25 cm).
Note: All products sold on Accuspire.com should be used by qualified clinician and should be purchased by or on order of a qualified clinician.
A test for quickly measuring 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...
ETDRS low contrast LEA NUMBERS® vision charts with proportionally spaced (geometric progression) lines. Features translucent low contrast letters with line sizes ranging from 13/131 to 13/5.2 (4/40...
These discs measure contrast sensitivity curve based on 4 gratings at 2 contrast levels: 10% and 2.5% contrast. These 2 levels use 2 grating frequencies: the 10% level uses 0.5 cpcm and 8 cpcm while...
A pediatric vision screening test with LEA SYMBOLS®. This test was designed specifically for the Massachusetts Preschool Vision Screening Protocol. Includes one practice card, two line sizes of 20/40...
A low contrast test is a special way to measure how well eyes function in low light situations and/or are able to distinguish objects from similarly colored or shaded backgrounds. Testing is...
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