If your vision is abnormal or deteriorating, it is best to consult an ophthalmologist for diagnosis and treatment. Diet only has a supplementary effect. Vitamin A has a direct relationship with photoreception and is a nutrient directly related to vision. Beta-carotene can also be converted into vitamin A in the body. The Vitamin B group (especially Vitamins B1 and B12) is closely related to nerve health (including the optic nerve), and a deficiency can easily cause neuritis and neuropathy. Therefore, the Vitamin B group should not be lacking.
Free radicals, which have been widely discussed recently, have also been shown to damage the eyeballs and optic nerve, so nutrients that help capture free radicals (beta-carotene, Vitamins C, E, B2, and the mineral selenium) have an indirect effect on eye protection.
1. Foods rich in Vitamin A (and beta-carotene): Liver, river eel, carrots, pumpkin, sweet potatoes (red), rapeseed, crown daisy, chrysanthemum greens, mustard greens, bok choy, sweet potato leaves, water spinach, mango, eggs, cod liver oil.
2. Foods rich in the Vitamin B group: Whole grains, liver, yeast, yogurt, wheat germ, beans, milk (Vitamin B2), meat (Vitamin B1, niacin).
3. Foods rich in Vitamin C: Vegetables, guava, oranges, tangerines, mango, papaya, pomelo, and other fresh fruits and juices.
4. Foods rich in Vitamin E: Sweet potatoes, soy products, carrots, eggs, whole grains, vegetable oils, green leafy vegetables.
It is still recommended to obtain nutrients from fresh, nutrient-rich vegetables and fruits, moderate amounts of dairy products, fish, lean meat, and whole grain foods, which are beneficial for eye health. If you are considering taking nutritional supplements, you should follow your doctor's advice.