Sweet potatoes
Orange-colored fruits and vegetables — like sweet potatoes, carrots, cantaloupe, mangos, and apricots — are high in beta-carotene, a form of vitamin A that helps with night vision, your eyes’ ability to adjust to darkness. One sweet potato also has more than half the vitamin C you need in a day and a little vitamin E.
Lean meat and poultry
Zinc brings vitamin A from your liver to your retina, where it’s used to make the protective pigment melanin. Oysters have more zinc per serving than any other food, but you don’t have to be a shellfish lover to get enough: Beef, pork, and chicken (both dark and breast meat) are all good sources.