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Test for visual acuity could aid detection, rehabilitation of AMD
Date:10/29/2007

d probability summation in 20 people with normal vision.

The authors concluded that a multiple-optotype, reversed-polarity test is most effective in estimating a patients optimal visual acuity at baseline before vision rehabilitation interventions or surgery. Comparing the results of subsequent evaluations may help assess rehabilitation progress.

People with AMD rarely read or view things under optimal conditions, so this is not a test of how well they see in daily life. This test is designed to give vision rehabilitation practitioners a measure of the best visual acuity a person is capable of and in this sense it could be a useful tool for assessing rehabilitation progress, said Dr. Gonzlez.

In addition, the authors point out that patients with early AMD may demonstrate reduced function, not for the high-contrast, high-illumination targets of standard clinical acuity tests, but for medium- and low-contrast targets. They conclude that their computer method, which allows testing for targets of varying contrast, might help specialists detect AMD early.

Detection of potential visual acuity in patients with AMD is a crucial step in the clinical practice of vision rehabilitation. The ability to accurately estimate such potential will enhance results from vision rehabilitation interventions said Dr. Markowitz, who is a member of the Vision Rehabilitation Committee of the American Academy of Ophthalmology.


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Contact: Joanne Olson
jolson@arvo.org
Association for Research in Vision and Ophthalmology
Source:Eurekalert

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