Dark berries are also beneficial because of their bioflavonoids. In fact, you may have heard that RAF fighter pilots ate bilberry jam during World War II to improve their night vision. The effect was due to a bioflavonoid in bilberries (a specific type of wild blueberry found in Europe) that helps protect blood vessels in the eye.

To maximize your intake of carotenoids and bioflavonoids, you should be sure to eat five to nine servings of fresh, colorful, and organic fruits and vegetables a day. Of course, a good multi-nutrient is also an important complement to your eye-healthy diet as long as it provides adequate daily amounts of lutein and beta-carotene.