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Do not base your order on the picture presented.
A low contrast test is a special way to measure visual acuity; determining how well eyes function in low light situations and/or being able to distinguish objects from similarly colored or shaded backgrounds.
Testing is identical to the measurement of visual acuity at high contrast level.
The 2.5% test is the most practical test in clinical use.
Available in 5 contrast levels: 1.25%, 2.5%, 5%, 10%, and 25%.
This chart is to be used in an ESV1200 or Model A+ illuminated cabinet.
Includes response key, training cards, recording forms and instructions.
Medex SKU: GL-254000