The following vitamins all have a good protective effect on the eyes: first, vitamin C and vitamin E, which can effectively improve blood circulation around and under the eyes, relieve visual fatigue, protect the blood vessels under the eyes, enhance vascular elasticity and reduce bleeding under the eyes. Second, vitamin A, can prevent and treat night blindness, night blindness patients due to the lack of vitamin A in the body, resulting in the retinal optic rod cells do not have sufficient nutrition, the eyes lack of retinitis, the symptoms of impaired night vision. Third, lutein, it is recommended that usually eat more carrots, carrots contain carotene, in the body can be converted into lutein, lutein on the cornea and the macula of the eye have a good nutritional effect. Fourth, the B vitamins, with the role of nutrition of the optic nerve.