Zeaxanthin, a dietary carotenoid that occurs in very small quantities in corn, spinach, and other dietary sources, can reduce light hyper-sensitivity and various related conditions (such as migraine or other recurrent headaches) in people who suffer from it. Preferred dosages range from about 10 to about 100 mg per day, depending on the severity of condition, and the weight and medical status of the person. High dosages during an initial "buildup" dosing regimen can promote increased concentrations in the macula and lens, and lower dosages can then be used for maintenance purposes. Lutein may be able to achieve similar results, but because of certain molecular and cellular factors, zeaxanthin is preferable. Additional active agents (such as bilberry or other plant extracts, Vitamins C or E, zinc, etc.) can also be included or coadministered with any such formulations.