Computers and networks, so that the world entered the era of information sharing. Scientific and technological progress, changing people's lives. People with social progress in the enjoyment of comfort and convenience, but also pay for that.
According to reports, China has four hundred million of myopia, and myopia among young people up to 60%. daughter on the third day, the class of 45 students, about three-quarters of wearing glasses. Today the city's children, away from the large Naturally, the computer as partners, classmates and friends, the most common means of communication between the mobile phone text messages and chat with QQ. children to face a lot of homework every day, the eyes have been fatigue, rest, apart from computer games to go online to see is bound to causing decreased vision. In order to protect the eyesight, except to remind the children outside the appropriate amount of rest, eating health is also very important.
our eyes see objects, mainly depends on the retina. photosensitive thin film on the retina, the distribution of two photoreceptor cells, that is, cone cells and rod cells. cone cells in the strong light charge depending on the material and to distinguish colors, rod cells are competent in low light depending on the material, that is Dark. mainly in the rod cells around the part of the retina, sensitive to weak light the reason why is because its cells contain a special photosensitive material, called rhodopsin. it can break down under the effect of low light, causing the generation of nerve impulses. rhodopsin is opsin and by the combination of retinal, and retinal changes in the vitamin A from. If the protein, particularly vitamin A deficiency can lead to the dark vision loss, severe night blindness can occur. a lack of vitamin A can cause dry eye syndrome and corneal osteomalacia.
order to maintain good eyesight children need in their daily diet supplies enough vitamin A.
the best food sources of vitamin A are liver, such as goat liver, liver , chicken liver and so on. In addition to cooking, but also can be made lo, the method is simple to add star anise in the soup, three Chennai, fennel, pepper, ginger, brown sugar, soy sauce, vinegar, salt and other spices, the liver is cooked be. Then put slices, in addition to eating three meals a day, but also can be used as snacks, convenient and delicious. but with a view of the liver is the detoxification organs, should not eat, eat once a week.
cheese, also known as Cheese is also an excellent food source of vitamin A, vitamin A content of its milk and yogurt is about several times. cheese is a high nutritional value of fermented dairy products, rich in casein, peptides and amino acids. flakes staple food for breakfast and cheese with baked bread, taste very good, also caught in the hot bread to eat. the small triangle of cheese to eat as a snack to the children. But most of the supermarket to buy a reproduction of cheese, with a lot of food additives, sodium content is high, be careful not to eat too much again.
plant foods contain vitamin A of the original (carotenoids), can be broken down into vitamin A. The best food sources for colored vegetables such as carrots, spinach , leeks, pumpkin, and fruit of mango, apricot, banana, citrus, grapes.
because the fast-paced life, people are often too simple breakfast. In order to let the children be able to easily cope with a day of intense learning, ease eye fatigue, breakfast should be possible to supplement the body needs various nutrients, including vitamin A. In the breakfast eat more foods rich in vitamin A, children from myopia.
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