The best way to ensure that you're getting all of your essential vitamins and minerals is to eat a balanced diet that includes fruits and vegetables -- they are a primary source of carotenoids, which can have overall benefits for vision health. Certain fruits and vegetables with higher vitamin A and C content have been shown to reduce glaucoma risk as well. Some of the most helpful fruits and vegetables for healthy vision are: collard greens, cabbage, kale, spinach, Brussels sprouts, celery, carrots, peaches, radishes, green beans, and beets.
Because oxidative stress is associated with damage to the optic nerve in glaucoma, antioxidants may help to prevent further injury. Dietary sources of antioxidants include pomegranate, acai berries, cranberries, dark chocolate, black and green tea, bilberry, lycopene (from tomato products), dark green leafy vegetables like kale and spinach, and flax seeds.
Any specific nutritional deficiencies in your diet can be addressed with supplements that include Vitamins A, B-complex, C, and E as well as the minerals Magnesium, Calcium and Zinc. However, there is no convincing data that vitamin supplements help to prevent glaucoma.
"I recommend that patients take a general multivitamin if they are uncertain whether their daily nutritional needs are met." was written by Amish Doshi, MD from Glaucoma Research Foundation
While good nutrition plays a role in disease prevention and overall health, it is not a treatment for glaucoma. Certain herbs such as ginkgo and bilberry may even increase the risk of bleeding with glaucoma surgery. Given the breadth of nutritional supplements available over-the-counter, it is important to discuss with your eye doctor all prescription, herbal, vitamin, mineral, and over-the-counter remedies you currently take. Talk to your doctor about any other questions related to glaucoma and your diet, exercise, and lifestyle choices.