For the computer family staring at the computer all day long, the burden on the eyes is enormous. If you do not care for it, it will seriously damage your eyesight and cause your eyesight to be greatly reduced. How should the computer family protect the eyes? Many foods contain trace elements that protect the eyes and eyes. What trace elements can protect our eyes? Let's take a look.
Vitamin A
Vitamin A's chemical name, retinol, is the earliest discovered vitamin. In 1913, four scientists from the United States Tai Weisi found that cod liver oil can cure dry eye. A yellow viscous liquid was purified from cod liver oil. In 1920 British scientists Mangert officially named it Vitamin A. Internationally, vitamin A is officially considered as an essential nutrient, and lack of it can lead to night blindness. Vitamin A is classified into vitamin A alcohol and carotene. Vitamin A can treat eye diseases. It was discovered as early as ancient times. Vitamin A is a component of rhodopsin, which constitutes a weak light in visual cells. Visually relevant, if there is a lack of vitamin A in the human body, it will affect the ability of dark adaptation.
Vitamin A-rich foods
The first is the original vitamin A, ie, various carotene, found in plant foods such as green leafy vegetables, yellow vegetables, and fruits. The richer contents are spinach, wolfberry, pea sprouts, sweet potato, carrots, and green peppers. , Pumpkin, etc.; the other is vitamin A from animal foods, this category is directly available to the human body of vitamin A, mainly in animal liver, milk and dairy products (non-skim milk) and eggs.
β-carotene
Beta-carotene (C40H56) is one of the carotenoids and is also an orange fat-soluble compound. It is the most common and stable natural pigment in nature. Beta-carotene can be converted into vitamin A after entering the human body. Its molecular structure is equivalent to two molecules of vitamin A. After entering the body, it acts as an enzyme in the liver and small intestine mucosa, and 50% of it turns into vitamin A. There is the role of liver and eyesight, can treat night blindness.
In the past decade, carotenoids have received unprecedented attention from the medical community. Through experiments, people have shown that the vision of the eyes depends on the macula of the fundus. If there is not enough β-carotene to protect and support, degenerative changes will occur at this site. When it is aging, vision will decline and eventually blindness occurs. Therefore, the human body intake of enough β-carotene has a major effect on the treatment of the eye.
Beta-carotene-rich foods
The most abundant sources of beta-carotene are green leafy vegetables and yellow, orange fruits (such as carrots, spinach, lettuce, potatoes, sweet potatoes, broccoli, cantaloupe, and wax gourds). In general, the more strongly colored fruits or vegetables, the richer the beta-carotene.
Vitamin C
Vitamin C is a generic term for compounds that show the biological activity of ascorbic acid. It is a water-soluble vitamin that is abundant in fruits and vegetables. Vitamin C is also very beneficial to the eyes. Vitamin C is the nutrient element of the intraocular lens. Insufficient intake of vitamin C is one of the factors that cause cataracts. Patients should supplement vitamin C.
Vitamin C-rich foods
There are many foods containing vitamin C, of ​​which the highest content is the cherries, followed by guava, red peppers, persimmons, broccoli, strawberries, oranges, kale cauliflower, kiwi and so on.
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