AARP clarifies myths and offers facts on cataracts and cataract surgery.

American Academy of Ophthalmology

Cataract is a clouding of the eye's lens. When we look at something, light rays travel into our eye through the pupil and are focused through the lens onto the retina, a layer of light-sensitive cells at the back of the eye.

National Eye Institute

A cataract is a clouding of the lens in the eye that affects vision. Most cataracts are related to aging. Cataracts are very common in older people. By age 80, more than half of all Americans either have a cataract or have had cataract surgery. A cataract can occur in either or both eyes.

Prevent Blindness America

Prevent Blindness America organization provides a factsheet on cataracts and clarifies myths surrounding cataracts.

The Merck Manual

A cataract is a clouding (opacity) of the lens of the eye that causes a progressive, painless loss of vision. Cataracts are the leading cause of blindness worldwide. Cataracts are common in the United States, where they affect mostly older adults.

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