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Cataract
Age-related Cataract

The lens inside the eye, normally transparent in youth, helps focus sharp, clear images on the retina. However, this lens clouds with age, and a cloudy lens is called a cataract. Cataracts can interfere with driving, reading, watching television, and cause glare at night or in bright sunlight. The milder symptoms of early cataracts can sometimes in be alleviated by a change in one's glasses prescription. In more advance cataracts the cloudy lens is removed and replaced by a lens implant.

Other Cataracts

Cataracts also can be secondary to trauma or radiation, or related to medications (i.e., steroids) or dieases. Cataracts can be congenital. These types of cataract are generally trreated the same as age-related cataracts: surgical replacement of the cloudy lens with a lens implant.