13. Citrus Fruits
Citrus fruits like oranges, berries, and kiwis are the richest sources for vitamin C. Vitamin C improves the health of the blood vessels present in the eyes and also aids in building collagen, which gives structure for your cornea. The eyes have a high metabolic rate and the metabolic reactions produce a lot of toxins. Citrus fruits provide the antioxidants required for constantly flushing out these toxins.