Category:catering food
Question:
myopia!
Answer:
1. Has a role in improving the vision of food
protect eyesight, prevent eye disease, many aspects need to start, in which attention to nutrition, to improve the eyesight also be helpful. In their daily diet, with foods to improve the visual effect:
(1) of food rich in vitamin A, vitamin A is closely related with normal vision. If vitamin A is inadequate, then the regeneration of rhodopsin slow and incomplete, prolonged dark adaptation, night blindness caused by severe. If the diet of vitamin A or less, there will be a continuing lack of dry eye, the disease can be further developed to soften the cornea and corneal ulcers, corneal folds, and also appeared Bitot spots. The best food sources of vitamin A is a variety of animal liver, cod liver oil, eggs, eggs, etc.; carrots, spinach, amaranth, alfalfa, red heart sweet potatoes, pumpkins, green peppers and other vegetables, vitamin A contained in the original in vivo converted into vitamin A.
(2) of food rich in vitamin C, vitamin C can weaken the light and oxygen to the eye lens damage, and thus delay the occurrence of cataracts. Foods containing vitamin c, bell pepper, tomato, lemon, kiwi fruit, hawthorn and other fresh vegetables and fruit.
(3) Calcium, calcium and eye constitutes a related, calcium deficiency can cause myopia. The growth of young people is at the peak of the requirements relative increase in calcium, if not attention to calcium supplement will not only affect bone development, but also make the developing eye wall - to reduce the flexibility of the sclera, the lens inside the pressure rise, resulted in the anteroposterior diameter of the eye caused by short-sighted elongated. Calcium and more food, mainly milk and its products, shellfish (shrimp), bone meal, beans and soy products, egg yolk, and dark green vegetables.
(4) chromium, chromium prone to myopia and lack of chromium can activate the insulin, so insulin to maximize the biological effects, such as the chromium content of less than human, and it will happen barrier function of insulin that regulates blood sugar, plasma osmotic pressure increased, resulting in lens of the eye, the Housing osmotic pressure increased and the refraction of water increases, and thus induce myopia. Chromium exists in more than brown rice, wheat bran into animal liver, grape juice, nuts are also relatively rich in content.
(5) zinc, zinc deficiency can lead to visual impairment, zinc in the body mainly in the bones and blood. Epidermis cornea, iris, retina and lens are also contained zinc, zinc and vitamin A in the eye involved in the generation of that) and transport, the maintenance of retinal pigment epithelium of normal tissue status, and maintain normal visual function. Zinc foods more oysters, meat, liver, eggs, peanuts, wheat, beans, grains and so on.
(6) pearl, pearl containing more than 95% of the calcium carbonate and a small amount of magnesium oxide, alumina and other minerals, and contains a variety of amino acids, such as leucine, methionine, alanine, glycine, glutamic acid, aspartic acid, etc., pearls of sweet salty cold, with pearl powder with borneol, amber and so dubbed the point the eye can inhibit the formation of cataracts.
(7), and seaweed, kelp, inter alia also contain iodine 1 / 3 of mannitol, dried kelp surface of a thick layer of , which is the kelp in the mannitol, mannitol diuresis, reduce intraocular pressure, used to treat acute glaucoma have a good effect. Other categories, such as wakame seaweed also contains mannitol, can also be used as a treatment of acute glaucoma supplementary food.
2. Help to improve the vision of health food diet can be increased through nutrition, to improve the vision, so we should be more intake of these foods, such as in the daily diet, based on the use of appropriate visual function has improved the health foods, may play a Good role of adjuvant therapy. The choice of health food products are:?
(1) vitamin A-rich foods, such as the Chinese wolfberry kind of product.
(2) rich in proteins, peptides, certain amino acids, such as taurine, nucleic acid and so on.
(3) contains cassia seed, chrysanthemum, hawthorn, pearl powder, health tea, powder or capsules.
$ Reference: Chinese Medicine Net Guide Xunyi
Chinese:什么要食物对眼睛有好处?
类别: 餐饮食品
问题:
近视眼!
回答:
1．具有改善视力作用的食物
保护视力，防治眼部疾病，需要从多个方面着手，其中注意营养，对改善视力也有一定的帮助。在日常饮食中，具有改善视力作用的食物有：
(1)富含维生素A的食物，维生素A与正常视觉有密切关系。如果维生素A不足，则视紫红质的再生慢而且不wq，暗适应时间延长，严重时造成夜盲症。如果膳食中维生素A继续缺乏或不足将会出现干眼病，此病进一步发展则可成为角膜软化及角膜溃疡，还可出现角膜皱折和毕脱氏斑。维生素A{zh0}的食物来源是各种动物肝脏、鱼肝油、鱼卵、禽蛋等；胡萝卜、菠菜、苋菜、苜蓿、红心甜薯、南瓜、青辣椒等蔬菜中所含的维生素A原能在体内转化为维生素A。
(2)富含维生素C的食品，维生素C可减弱光线与氧气对眼睛晶状体的损害，从而延缓白内障的发生。含维生素c的食物有柿子椒、西红柿、柠檬、mh桃、山楂等新鲜蔬菜和水果。
(3)钙，钙与眼球构成有关，缺钙会导致近视眼。青少年正处在生长高峰期，体内钙的需要量相对增加，若不注意钙的补充，不仅会影响骨骼发育，而且会使正在发育的眼球壁——巩膜的弹性降低，晶状体内压上升，致使眼球的前后径拉长而导致近视。含钙多的食物，主要有奶类及其制品、贝壳类(虾)、骨粉、豆及豆制品、蛋黄和深绿色蔬菜等。
(4)铬，缺铬易发生近视，铬能jh胰岛素，使胰岛发挥{zd0}生物效应，如人体铬含量不足，就会使胰岛素调节血糖功能发生障碍，血浆渗透压增高，致使眼球晶状体、房水的渗透压增高和屈光度增大，从而诱发近视。铬多存在于糙米、麦麸之中，动物的肝脏、葡萄汁、果仁含量也较为丰富。
(5)锌，锌缺乏可导致视力障碍，锌在体内主要分布在骨骼和血液中。眼角膜表皮、虹膜、视网膜及晶状体内亦含有锌，锌在眼内参与维生素A的代谓}与运输，维持视网膜色素上皮的正常组织状态，维护正常视力功能。含锌较多的食物有牡蛎、肉类、肝、蛋类、花生、小麦、豆类、杂粮等。
(6)珍珠，珍珠含95％以上的碳酸钙及少量氧化镁、氧化铝等矿物质，并含有多种氨基酸、如亮氨酸、蛋氨酸、丙氨酸、甘氨酸、谷氨酸、天门冬氨酸等，珍珠性味甘咸寒，用珍珠粉配龙脑、琥珀等配成的“真珠散”点眼睛可抑制白内障的形成。
(7)海带，海带除含碘外还含有1／3的甘露醇，晒干的海带表面有一层厚厚的“白霜”，它就是海带中的甘露醇，甘露醇有ln作用，可减轻眼内压力，用来zl急性青光眼有良好的功效。其他海藻类如裙带菜也含有甘露醇，也可用来作为zl急性青光眼的辅助食品。
2．有助于改善视力的保健食品 通过饮食可以增加营养，改善视力，所以我们应多摄入上述食物，如能在日常膳食的基础上，选用适当的具有改善视力功能的保健食品，则可起到良好的辅助zl的作用。可选用的保健食品有：
(1)富含维生素A的食物，如枸杞类制品。
(2)富含蛋白质、肽类、某些氨基酸、如牛磺酸，核酸等。
(3)含有决明子、菊花、山楂、珍珠粉等的保健茶、冲剂或胶囊。
$ 参考资料：中国寻医导药网