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In presbyopia, the lens thickens and loses its flexibility, and the eye cannot focus on a near object. Light entering the eye is focused (focal point) behind the retina instead of on the retina. This causes blurred vision.
Last Revised: June 11, 2013
Author: Healthwise Staff
Medical Review: Kathleen Romito, MD - Family Medicine & Christopher J. Rudnisky, MD, MPH, FRCSC - Ophthalmology
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