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New optical metrics can identify patients on 'fast track' to decreased vision
Date:6/24/2013

Philadelphia, Pa. (June 24, 2013) - Sophisticated new optical quality metrics can identify older adults likely to have more rapid age-related declines in vision, suggests a study, "Factors Accounting for the 4-Year Change in Acuity in Patients Between 50 and 80 Years", in the July issue of Optometry and Vision Science, official journal of the American Academy of Optometry. The journal is published by Lippincott Williams & Wilkins, a part of Wolters Kluwer Health.

The study by Darren E. Koenig, OD, PhD, and colleagues of University of Houston College of Optometry defines three advanced optical measures that may help in predicting which older patients will have larger drops in visual acuity over time. "These fast-changing optical metrics allow the identification of patients at risk of being on a fast track to visual acuity loss," comments Anthony Adams, OD, PhD, Editor-in-Chief of Optometry and Vision Science.

Advanced Optical Measures Predict Change in Visual Acuity

Dr Koenig and coauthors performed a follow-up study in 148 older adults, aged 50 to 80 years. In addition to standard visual acuity testing, the participants underwent wavefront error (WFE) testinga computerized test that can detect subtle abnormalities in the eye's handling of light. About 40 optical components based on WFE were calculated, including 31 different image quality measures, four measures of light scatter in the eye, and four measures of opacification (clouding) of the lens of the eye.

Four years later, visual acuity was measured again. The optical metrics were evaluated for their ability
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Contact: Connie Hughes
connie.hughes@wolterskluwer.com
Wolters Kluwer Health
Source:Eurekalert

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