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Cataract Surgery may Benefit AMD Patients at All Stages
Multicenter Study Finds AMD Patients Benefit from Cataract Surgery
Cataract surgery improved vision in patients with any stage–from mild to advanced– AMD in the first study to include an adequate number of advanced AMD patients. Data was obtained from the multicenter, prospective Age-Related Eye Disease Study (AREDS), funded by the National Eye Institute (NEI), which was organized primarily to evaluate the effects of high-dose vitamin and mineral supplements on cataract and AMD. As the American population ages AMD prevalence is expected to rise, and many patients will concurrently develop cataract; both diseases can cause blindness if untreated.
"Earlier epidemiology had suggested cataract surgery might worsen AMD, so the data from the AREDS cohort study were evaluated to answer this important question," said Emily Y. Chew, MD, who led the study for NEI.
The cohort, comprising 1,939 eyes (1,244 patients) with various stages of AMD, was evaluated for visual acuity (sharpness) after cataract surgery. On average, patients with AMD, ranging from mild to advanced, gained visual acuity after cataract surgery; the best gains were in patients with vision worse than20/40 before surgery. No difference in improvement was noted between patients with "wet" (neovascular) or "dry" (central geographic atrophy) AMD. About one year later vision gains remained statistically significant in the 865 eyes available for follow-up. Results for the primary focus of AREDS, regarding the effect of nutritional supplements, showed that high doses of vitamins C, E and beta-carotene did not affect the development or progression of cataract, but this vitamin combination plus zinc did reduce the risk of progression to advanced AMD by 25 percent in the five years of the study.
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More News on: Cataract, Cataract in Detail, Eye, Geriatry-Related Diseases, Vision, Blindness Facts, Age Related Macular Degeneration, Foods that Gives You Sparkling Eyes, Double Vision
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