A healthy diet can’t hurt (and might help) your vision. If you grew up being told to eat carrots because they’re good for your vision, you’re not alone. The beta-carotene in carrots is converted to vitamin A, which is essential for good vision. Exercise may help prevent eye damage. Sources:AARP:6 Best Vitamins for Eye HealthAmerican Academy of Ophthalmology:Could Exercise Help Prevent Eye Damage?