眼睛保健（Eye care）.docVIP

眼睛保健（Eye care） Vitamin A is an important material to form the eyes sensitive substance. Vitamin A is sufficient to increase the brightness of the cornea and make the eyes bright and bright. On the contrary, may cause corneal epithelial cell shedding, thickening, keratinization, the clear cornea becomes like frosted glass, even lead to night blindness, cataract and other eye diseases. Contains more vitamin A foods, animals, liver, fruits, vegetables and carrots, etc., can eat more. Vitamin B1 and vitamin B2 are important substances involved in the metabolism of nerve cells, including the optic nerve. They can protect the eyelids, conjunctiva, bulbar conjunctiva and cornea, and prevent the formation of canthus wrinkles. Vitamin B1, vitamin B2 deficiency, there will be dry eyes, conjunctival congestion, inflammation of the eyelids, photophobia, blurred vision, fatigue and other symptoms, and even optic neuritis. Foods rich in vitamin B1 include rice bran, coarse grains, legumes, and peanuts. Therefore, the choice of staple food do not have to fine, Taomi times should not be too much. The sources of vitamin B2 are mainly liver, eggs, milk and vegetables, which can be eaten more. Vitamin C is an important nutritional component of the lens of the eye. It is easy to suffer from cataract, keratitis, anterior chamber and iris due to insufficient intake. Foods rich in vitamin C are grapefruit, tomatoes, dates, kiwi and green vegetables. Although the content of trace elements in the human body is less than 1/10000 of the weight, but the role is great, without them, metabolism can not be carried out, of which 4 kinds of trace elements on the eye of great impact. Zinc can increase the sensitivity of the optic nerve, zinc intake, cone cells, depending on the quality of synthetic obstacles will appear, thus affecting the color discrimination function, the highest zinc content in food oysters, a rich source of liver, cheese, peanut and zinc. Selenium is an important trace element t