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For many older adults, vision prescription differs between eyes
Date:11/20/2013

Philadelphia, Pa. (November 21, 2013) - Follow-up in older adults shows a high rate of anisometropia, or differing levels of visual abnormalities between eyes, reports a study in 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.

"Uncorrected anisometropia is likely to lead to disturbances in binocular vision and stereopsis, which in turn may contribute to falls in the elderly," concludes the new research, led by Gunilla Haegerstrom-Portnoy, OD, PhD, FAAO, of University of California, Berkeley. They emphasize the importance of appropriate vision correction in both eyes for older adultsespecially at more advanced ages.

Study Confirms Increased Anisometropia with Aging

The researchers analyzed vision examination results in 118 older adults followed up over 12 yearsfrom an average age of 67 to 79 years at the end of the study. The study focused on the development of anisometropia, defined as a significant difference (one diopter or more) in prescription (refractive error) between the two eyes in one of four components.

During the study period, the prevalence of anisometropia increased significantly. For each of the four prescription components, the prevalence of anisometropia approximately doubled. As the participants approached 80 years of age, 32 percent met the study definition of anisometropia.

The differences in prescription components provided some clues to the causes of aging-related anisometropia. Most cases were related to differing degrees of farsightedness (hyperopia) between eyes. Others were caused by early but unequal blurring of the lens of the eyeeven tho
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Contact: Connie Hughes
Connie.Hughes@wolterskluwer.com
646-674-6348
Wolters Kluwer Health
Source:Eurekalert

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