Vision is impaired when the blurring occurs directly in the line of sight or as the cataract enlarges and blocks vision. Although most commonly associated with older age, children and adults may be affected.
Small cataracts require periodic monitoring only.
Larger ones may require glasses or other treatment. Surgery is needed to replace a lens when normal vision is blocked. It is done under local anesthesia and takes about an hour. Good health habits may postpone or prevent cataracts. Eat a diet high in vitamins C and E and beta carotene.