When it comes to protecting your vision, what you eat may affect what you see, reports the August 2013 Harvard Health Letter. Vitamins, minerals, and other nutrients found in food play a role in preventing two common causes of vision problems: cataracts and age-related macular degeneration. Cataracts are cloudy areas in the lens of the eye, while macular degeneration is a deterioration of the macula, the part of the eye that controls central vision. "While there is no definite proof, some studies suggest that eating a diet rich in certain nutrients may help," says Dr. Ivana Kim, associate professor of ophthalmology at Harvard Medical School.

Nutrients thought to be responsible for eye protection include antioxidant vitamins and minerals, lutein and zeaxanthin, and the omega-3 fatty acid docosahexaenoic acid (DHA). How can you get enough of these natural vision helpers? Load up on foods that deliver them:

lutein, zeaxanthin: broccoli, Brussels sprouts, collard greens, corn, eggs, kale, nectarines, oranges, papayas, romaine lettuce, spinach, squash

omega-3 fatty acids: flaxseed, flaxseed oil, halibut, salmon, sardines, tuna, walnuts

vitamin A: apricots, cantaloupe (raw), carrots, mangos, red peppers (raw), ricotta cheese (part-skim), spinach,