Congenital cataracts occur very rarely in newborns. Genetic defects or an infection or disease in the mother during pregnancy are among the causes of congenital cataracts. Traumatic cataracts may develop after a foreign body or trauma injures the lens or eye. Systemic illnesses, such as diabetes, may result in cataracts. Such cataracts are called complicated cataracts.
Toxic cataracts result from chemical toxicity, such as steroid use.
Recent studies have been conducted to try to determine whether diet or the use of vitamins might have an effect on the formation of cataracts in older people. The results have been mixed, with some studies finding that there is a connection and other studies finding none. Much interest has been focused on the use of antioxidant supplements as a protection against cataracts. Some vitamins are marketed specifically for the eyes. Patients should speak to their doctors about the use of such vitamins.