A proper diet can help many parts of your body, including your eyes. In fact, there are several foods that are shown to help your overall eye health and your vision. Raw bell peppers are a perfect place to start. Packed with the greatest concentration of Vitamin C per calorie, bell peppers help the blood vessels in your eyes and can reduce your risk for cataracts. But remember that heat breaks down Vitamin C, so go raw when eating your peppers. Bright colored peppers are also packed with vitamins A and E.