The British Journal of Nutrition reported that increased plasma levels of the carotenoid, Lutein and Zeaxanthin are associated with lower risk of cataracts, particularly in older individuals.
Lutein is called a carotenoid vitamin. It is related to beta-carotene and vitamin A. Foods rich in lutein include broccoli, spinach, kale, corn, orange pepper, kiwi fruit, grapes, orange juice, zucchini, and squash. Lutein is absorbed best when it is taken with a high-fat meal.
Zeaxanthin is a bioflavonoid , which is a type pigment found in almost all herbs, fruits, and vegetables. Bioflavonoids provide the body with anti-inflammatory and antioxidant protection, and are one of the main reasons fruits and vegetables are so healthy to eat. Zeaxanthin belongs to a group of bioflavonoids known as carotenoids, a group that is further subdivided into two groups: carotenes and xanthophylls. Zeaxanthin is one of the xanthophylls, which are found most abundantly in dark, leafy green vegetables, and are crucial to the good health of the eyes. The retina of the eye actually contains a lot of zeaxanthin, which is why it is so important to include this carotenoid in your diet.
This combo, along with the herb Lycii is excellent as both treatment and prevention for many issues related to the eyes.