Eyes Home > Information on Cataracts

Cataracts occur when the lens of the eye becomes cloudy. As a result, the flow of light is distorted and the picture formed on the retina becomes dim or blurry. This can result in symptoms such as:
  • Blurry vision
  • Poor night vision
  • Difficulty reading
  • Frequent prescription changes in eyeglasses.
Although there are many different types, age-related cataracts are the most common. In fact, by the age of 80, more than half of all Americans either have a cataract or have had cataract surgery.
(To read more, click Cataracts. This article takes an in-depth look at cataracts and how they are treated, why they occur, and what to do if you think you have a cataract.)
Written by/reviewed by:
Last reviewed by: Arthur Schoenstadt, MD
Last updated/reviewed:
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