Caring for our eyes and the issue of nutrition should not be ignored. So what nutrients do our eyes need? The most important are proteins and vitamins, which play a vital role in maintaining the normal structure and function of the cornea, lens and retina. Vitamin A, for example, is essential for maintaining normal vision and preventing the development of night blindness and dry eyes. If deficient, it can lead to dry eyes, photophobia, tearfulness, and corneal softening dysplasia. Animal liver, cod liver oil, dairy products, carrots, garlic scapes, parsley, rape, spinach, green peppers and other foods are rich in vitamin A and should be supplemented promptly. Vitamin B1 or vitamin B12 deficiency is an important factor leading to optic neuritis, coarse grains, mixed grains, cereals, nuts, beans, as well as lean meat and animal offal contain a large amount of vitamin B1, while vitamin B12 is only contained in animal foods, so it should be reminded that vegans are most likely to lack vitamin B12. vitamin C is also an important nutrient for the eyes, and studies have found that the vitamin C content in the human eye is 30 times higher than that in the blood. Studies have found that the amount of vitamin C in the human eye is 30 times higher than in the blood. Vitamin C can reduce the damage to the lens from light and peroxides and has the effect of preventing the formation of old cataracts. Fresh vegetables such as green vegetables, leeks, spinach, peppers, and fresh fruits such as oranges, red dates, hawthorn, kiwi, etc. are rich in vitamin C and should be consumed in sufficient quantity. Therefore, we should try not to be picky about food and develop the habit of eating more coarse grains, vegetables, fruits, lean meat, fish and eggs. In addition, the nutritional role of trace elements for the eyes should not be ignored. Zinc, cadmium, molybdenum, selenium, etc. are involved in the synthesis of a variety of substances in the eye. If lacking they will affect the normal visual function, such as zinc deficiency affects the operation of vitamin A, which can cause retinal retinal retinal synthesis disorders and diminished dark adaptation. Selenium is involved in the movement of the eye muscles and pupil, ensuring that our eyes can turn flexibly. Therefore, we should also pay attention to ensure the intake of these trace elements in our daily life.