A cataract is the gradual clouding of the part of your eye known as the crystalline lens. Cataracts occur when there is a buildup of protein in the lens that makes it cloudy. This buildup prevents light from passing through the lens, causing some loss of vision. It is not known what causes the buildup of the protein responsible for clouding the lens.

Some risk factors for Cataracts include:

Healthy eye vs. eye with Cataracts

Symptoms of Cataracts

Cataracts often form slowly and cause few symptoms. When symptoms are present, they can include:

Types of Cataracts