Main Menu Back to Eye Disorders Adaptive Equipment Braille Eye Exams Eye Surgery History News Research & Clinical Studies Eye Diagram Glossary   Our Other Sites Bookstore Directory Other Resources Statistics Vision Health Resources Search All Sites Site Map Resource Links Third Party Links Eye Disorders - Cataract 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. It cannot spread from one eye to the other. Normal vision The same scene as it might be viewed by a person with cataracts. For More Information: Frequently Asked Questions about Cataracts Statistics for Cataracts Other Resources for Information about Cataracts Source: National Eye Institute

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