The most common cause of decreased vision after age 60 is age-related macular degeneration, according to the Foundation of the American Academy of Ophthalmology. ARMD comes in two different types: dry and wet. Dry is more common, while wet involves the growth of abnormal blood vessels under the retina. These abnormal vessels leak fluid and blood, which interferes with macular function in the eye.
Generally speaking, according to the foundation, ARMD encompasses several conditions that all involve the deterioration of the macula – a small area of the retina surrounding the fovea. This deterioration then results in the loss of sharp central vision.
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