Cataracts can develop for a number of reasons. The most common type of cataract is associated with aging, although not all people get cataracts as they age. Cataracts can also be caused by an injury to the eye: a strong, sharp blow, a chemical or electrical burn, or a high dose of radiation. Less common causes of cataracts include long-term side effects of certain medications and eye conditions. In rare cases, genetic factors can lead to the development of cataracts at birth or in early childhood.

For more information about cataracts, visit our dedicated page.