Contrast sensitivity is the ability of eye to see a given object against a background. The closer the levels of target illumination and background illumination, the more difficult it becomes to resolve the target. The reduction in contrast sensitivity occurs in corneal disease, cataract and retinal degenerations.
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Advantages: The chart is familiar Inexpensive, quick and easy to use and interpret Disadvantages: Snellen chart has only one 6/60 lette...
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Preferences: Similarly quantities of letters per line. Consistently separating amongst lines and letters. Uniform movement ...
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Don't take your eyes for granted. Take these easy steps to keep your peepers healthy.
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