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 identical to the measurement of visual acuity at a high contrast level. The 2.5% test is the most practical in clinical use. Available in 5 Contrast levels: 1.25%, 2.5%, 5%, 10%, and 25%. Each chart includes a response key and instructions.
Dimensions: 9″ x 14″ (22.9 cm x 35.6 cm).
Testing distance: 10 feet/3 meters.