Contrast sensitivity testing: A more complete assessment of vision

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Abstract
Btained under artificial conditions. Contrast sensitivity testing measures a range of visual performance under real-life conditions. It measures the least amount of contrast needed to detect a visual stimulus and gives us a more complete quantitization of patient; visual capabilities. Many instances in which losses in contrast sensitivity were detected when visual acuity (one point on the contrast sensitivity function) was normal have been reported. These include amblyopia, neuro-ophthalmology, retina, anterior segment disease, and glaucoma. Therefore, contrast sensitivity testing enables the clinician to diagnose selective deficits in visual processing at an earlier stage than is possible with conventional testing methods. aReprint requests to Lawrence F. Jindra, M.D., Wills Eye Hospital, Ninth and Walnut Streets, Philadelphia, Pennsylvania 19107. © Williams & Wilkins 1989. All Rights Reserved....

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