Let's answer these questions:
1. What nutrition does the eye need most?
(1) Water: You are not mistaken, it is water. "Big watery eyes" are often used to describe beautiful and healthy eyes. Water is indispensable to the eyes. It will be very uncomfortable if your eyes are dry. The tear film mentioned above is also a film in which tears are evenly distributed in the conjunctival sac, and one of its important components is water. Therefore, it is very important to hydrate your eyes. For example, hyaluronic acid, a popular substance in the beauty industry, is actually a mucopolysaccharide substance with good water retention. You may not know that this substance is distributed in the vitreous body of mammalian eyes to some extent, and it is an inherent nutrient of human body, so it is also called sodium hyaluronate. Sodium hyaluronate has a very important physiological function for eye water retention.
(2) Lipids: Why do human eyes still need lipid components? The answer is yes. Scientific research shows that the tear film used to keep eyes moist is a three-layer material, although it is only a very thin layer. It can be divided into mucus layer, water layer and lipid layer. Lipid layer is very important for maintaining the stability of tear film. Therefore, lecithin lipid substances are also very important for maintaining normal tear film and normal eye nutrition.
(3) Vitamin A: Vitamin A, also called retinol, is the earliest vitamin discovered by human beings. Although it was first discovered among vitamins, its physiological function has not been fully explored so far. However, it can be confirmed that vitamin A is indispensable for maintaining normal visual function. If the eyes lack vitamin A, it will cause night blindness and decrease vision. Another thing to point out is that you should be familiar with the precursor of vitamin A-β-carotene. Therefore, vitamin A and carotene supplements are good for the eyes.
(4) Choose natural vitamin C to protect eyes. West Indian cherries contain more vitamin C than other fruits. Basisi Indian cherry powder tablets belong to the natural vitamin C in the market, which can prevent the retina from being damaged by ultraviolet rays, prevent the lens from aging, increase the toughness of tiny blood vessels in the eye, repair cells and help improve the health of the eyes.
(4)B vitamins: B vitamins, such as calcium pantothenate and vitamin B 12, have two physiological effects on eyes. One is to maintain the epithelial tissue function of the eyes, but to maintain a nutritious optic nerve. Lack of B vitamins may damage the optic nerve.
(5) Taurine: Taurine is a small molecule amino acid. Although the molecule is small, it is very powerful. Taurine accounts for 50% of the total free amino acids in retina. Do you know why cats have bright eyes? Because it eats rats! Hayes reported in 1975 that the lack of taurine in the cat's diet will lead to retinal degeneration and eventually blindness. The main reason why cats and night owls prey on mice is that mice are rich in taurine, and eating more can keep their keen eyesight. Taurine is very important for maintaining the function of retina, and the lack of taurine in children will cause retinal dysfunction.
(6) Lutein: Lutein, alias carotenoid, carotene, plant lutein, nuclear lutein, marigold and plant lutein, etc. , English name lutein. It is a natural antioxidant in vegetables. Human eyes contain a lot of lutein, which is an element that the human body cannot produce and must be supplemented by lutein intake. Without this element, the eyes would be blind.