Lenses or surgery are necessary in most cases to help correct vision, but there are also some ways you can improve your eyesight and eye health on your own. The best way to improve or maintain your eye health is to eat foods that contain vitamins and antioxidants necessary for your eyes to function well. Vitamin A and lutein are two substances found in food and supplements that can help. Vitamin A is found in foods like carrots, kale, spinach, collard greens, liver/cod liver oil, and sweet potatoes, while lutein is in foods like greens, zucchini, and brussels sprouts.