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A cataract is a problem with the lens of your eye. The lens lets the light into your eye and helps you focus. It is made of water and proteins. When the lens is healthy, the proteins are spread evenly and the lens is clear. With cataracts, the proteins clump together, causing cloudy spots on the lens and turning the lens from clear to slightly yellow or brown. Cataracts make it hard to see clearly and may make colors seem dull.
Cataracts are most common in older adults. You can have a cataract in one eye or both eyes, but cataracts do not spread from one eye to the other.
Cataracts often cause these vision problems:
If your eyeglass prescription needs to be changed a lot, it might mean that you have a cataract.
Whenever you notice a problem with your vision, make an appointment to see your eye doctor. Your symptoms might be from a cataract or other eye problem.
Cataracts usually develop as people get older, and are caused by normal wear and tear on the eyes. Ultraviolet light from the sun can cause cataracts over time. Smoking can also cause cataracts or make them worse. Some diseases, like diabetes, might increase your risk for cataracts.
To check for cataracts, your eye doctor will do a full eye exam, which will likely include:
According to the National Eye Institute, more than half of all Americans have had a cataract by age 80. But you can lower your risk of getting a cataract by doing these things:
Cataracts are an age-related eye problem. Cataracts develop when the proteins in the lens of the eye clump up and make the lens cloudy. A cataract can make your vision blurry, increase sensitivity to glare and make it hard for you to see at night. At first, cataracts can be treated with anti-glare glasses and a new eyeglass prescription. Once those no longer work, cataracts are treated with surgery that replaces the lens with an artificial one.