What foods are there to protect your eyesight (1)? Pay attention to vitamin a supplementation.
Vitamin A, also known as retinol, plays an important role in the formation of human vision. It is involved in the synthesis of rhodopsin in retina. If vitamin A is insufficient, the adaptability of eyes to dark environment will decrease, and in severe cases, it will lead to night blindness.
The content of vitamin A in animal liver, cod liver oil, roe, whole milk, whole dairy products and eggs is high. Carotene can also be converted into vitamin A in human body, so it is called provitamin A. Vitamin A is rich in green vegetables and yellow vegetables, fruits such as spinach, leeks, pea seedlings, alfalfa, green peppers, sweet potatoes, carrots, pumpkins, apricots and mangoes.
(2) Eat a diet rich in calcium.
Calcium belongs to eye tissue. Protector? . Calcium deficiency in the body will not only reduce the elasticity of retina, increase the pressure in lens, lengthen the anterior and posterior diameter of eyeball, but also cause pathological changes of cornea and ciliary muscle, which will easily lead to decreased vision or myopia.
Milk, beans, fungi, dried fruits and seafood are rich in calcium, which is beneficial to the absorption of calcium when eaten with vitamin D.
(3) Trace elements such as selenium, zinc and chromium can improve the function of eye tissue and prevent vision loss.
Foods rich in selenium include animal liver, eggs, fish, shellfish, soybeans, mushrooms, asparagus, shepherd's purse, carrots and so on. Foods containing more zinc include liver, kidney, seafood, milk, cereals, beans and hard fruits. Foods containing more chromium include beef, black pepper, brown rice, corn, millet, coarse flour, brown sugar, grape juice, edible fungi and so on.
(4) foods rich in vitamin C.
Vitamin c can weaken the damage of light and oxygen to the lens of the eye, thus delaying the occurrence of cataract. Foods containing vitamin C include persimmon pepper, tomato, lemon, kiwi fruit, hawthorn and other fresh vegetables and fruits.
(5) pearls
Pearls contain more than 95% calcium carbonate and a small amount of minerals such as magnesium oxide and alumina. The sweet, salty and cold flavors of pearls can inhibit the formation of cataracts.
(6) kelp
Kelp contains 1/3 mannitol besides iodine, and the surface of dried kelp is covered with a thick layer of? Frost? It is mannitol in kelp, which can reduce intraocular pressure and has a good effect on the treatment of glaucoma. Other seaweeds such as Undaria pinnatifida also contain mannitol, which can also be used as an auxiliary food to treat glaucoma.
(7) Coarse grains and fresh vegetables
Finally, eat more coarse grains and fresh vegetables and less sweets and sweets. Vitamins B and C in coarse grains and fresh vegetables have protective effects on eyes.