With the development of electronic products and Internet education, myopia occurs earlier and earlier in children. Can nutrition help prevent myopia? To relieve visual fatigue and prevent the occurrence or further development of myopia, in addition to paying attention to visual training and outdoor activities, you must also pay attention to some nutrients to provide a sufficient material basis for maintaining eye health.
There are six categories of important nutrients for school-age children's vision, namely:
- Lutein and zeaxanthin which are beneficial to the "macular area" of the eyes
- Vitamin A or carotene which is beneficial to the eye's ability to adjust light perception
- Anthocyanins and flavonoids that increase blood circulation under the eyes
- A family of vitamins, minerals and DHA that assist these nutrients in functioning and delay eye aging
Lutein and zeaxanthin
Lutein and zeaxanthin can absorb harmful ultraviolet and short-wave light in the light, while capturing dangerous free radicals, helping eyes to delay fatigue and aging.
The retina is an important tissue and organ that produces vision in the human body. Only when light reaches the retina with normal function can a visual image be formed. Light that is too weak or too strong will affect the formation of normal visual images. If the intensity and duration of light exceed the endurance of the retina, retinal damage will occur.
There is a pigmented area in the posterior pole of the retina, which is yellow due to its high concentration of lutein, so it is called the "macula". Lutein and zeaxanthin are the only two carotenoids on this tissue. They can filter ultraviolet and blue-violet light very effectively, and can effectively protect the eyes from damage.
Lutein is converted into zeaxanthin in the body, thereby protecting the eyes. Their protection against retinal light damage is mainly reflected in three aspects: the filtering effect of blue-violet light, the antioxidant effect, and the signal transduction of lutein that can improve the communication function of cell gap junctions.
Scientists supplemented lutein to 37 college students who had heavy eye tasks, and found that after three months of supplementation, the students' contrast sensitivity and glare sensitivity were significantly improved.
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Adults, middle-aged and elderly people also need lutein
A study conducted among 4,500 elderly people between the ages of 60 and 80 found that green leafy vegetables have a significant preventive effect on macular degeneration. Researchers investigated their diets for six consecutive years and found that people whose diets contained the most lutein and zeaxanthin had a 35% lower risk of developing macular degeneration than those who rarely ate these two ingredients.
Vitamin A and carotene
The eye's adaptation to changes in light and dark is closely related to vitamin A. Vitamin A deficiency will reduce the ability of the eyes to adapt from light to dark, and it will also dry out the cornea on the surface of the eyes. In severe cases, it is called "dry eye disease".
The human eye has a very strong ability to adjust. It can quickly adjust its photoreceptor cell responses to different lights and colors. The important nutrient responsible for vision in dark light and vision between light and dark is vitamin A.
Vitamin A can combine with the opsin in the eye to form rhodopsin, and rhodopsin decomposes under the stimulation of dark light to generate nerve impulses, allowing the human body to see the image of objects in low light. If vitamin A is insufficient, the body's ability to adapt from light to dark will decrease, making it difficult to see clearly at night and having difficulty adapting to light and dark changes.
In addition, vitamin A is an essential nutrient for the differentiation and renewal of mucous membranes. If you are deficient in vitamin A, your eyes may also feel dry. In severe cases, white spots, corneal softening or ulcers may occur. Staring at computers, TVs, game consoles, etc. for a long time will increase the consumption of vitamin A, so extra attention should be paid to supplementation.
Carotenoids are plant sources and precursors of vitamin A and also have special effects on the eyes.
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Anthocyanins and flavonoids
Anthocyanins are pigments in plants that give morning glories their beautiful red, purple, and blue colors. Anthocyanins can increase the blood flow of fundus microcirculation, accelerate eye metabolism, strengthen nutrient exchange, enhance the protection of eye capillaries, and shorten the recovery time of macular function.
Anthocyanins and flavonoids are both polyphenols. They both protect capillaries and improve blood supply to the eyes.
At the same time, anthocyanins are also helpful in accelerating the regeneration of rhodopsin protein, which may reduce eye fatigue to a certain extent and improve vision sensitivity to low light. Many nutritional supplements that protect eyesight include lutein and anthocyanins.
B vitamins, vitamin C and vitamin E
The intense work of the eyes for 16 hours a day requires the participation of many enzymes and the supply of a large amount of nutrients. B vitamins are necessary for eye function.
Vitamin B2 among the B vitamins is particularly important. It is called the "beauty vitamin". If it is deficient, the eyes will often be afraid of light, shed tears, and the whites of the eyes will be covered with red threads, making it impossible to talk about beautiful eyes. Vitamin B6, pantothenic acid, etc. can also help eyes recover from fatigue. Vitamin B2 is a nutrient that Chinese residents are prone to be deficient in, so special attention should be paid to supplementing it.
Nutrients such as vitamin C and vitamin E are not directly related to vision itself, but they can delay the aging of eyeball function, increase the nutritional capacity of the optic nerve, and prevent the occurrence of various age-related eye diseases. In addition, antioxidant ingredients such as zeaxanthin and anthocyanins also have a good protective effect on the eyes.
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Dalcium and zinc
The movement of the eyeballs requires muscle pulling, and calcium is closely related to muscle flexibility. If there is a long-term calcium deficiency in the diet, the muscles will become stiff and their elasticity will decrease, resulting in inflexible eye movement, poor eye muscle adjustment and recovery capabilities, and even elongation of the eye axis, leading to deepening of myopia.
Zinc is an active factor of many enzymes and an essential nutrient for vision formation. The zinc content in the eyes is extremely high. If there is not enough zinc, it can lead to vision loss and blurred vision in low light.
DHA
The eyes contain a very high level of DHA, which is very helpful for the activity of the optic nervous system.
1. DHA accounts for 60% of the total fatty acids in the retina. In the retina, each rhodopsin molecule is surrounded by 60 molecules of DHA-rich phospholipid molecules;
2. DHA enables retinal pigment molecules to improve visual acuity;
3. DHA helps neurotransmission in the brain.
Studies have proven that the difference in visual acuity between babies who continue to consume sufficient DHA and those who do not consume DHA is equivalent to being able to look down one line on a standard eye chart.
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HSF Biotech's products for eye protection
It is very important for children to protect their eyesight. In addition to consuming the above nutrients from their diet, food supplements are also essential.
HSF Biotech understands the importance of children's vision protection, so we have carefully developed a series of highly effective dietary supplement ingredients. Including Lutein, zeaxanthin, Vitamin A, Carotene, B vitamins, vitamin C and vitamin E, DHA, etc., aiming to help your products better meet market demand and jointly protect children's bright future.
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As a professional raw material supplier, we are committed to providing you with high-quality, safe and reliable dietary supplement raw materials. Our products not only comply with national standards, but also undergo strict testing and verification to ensure that we provide the most competitive products to your brands and distributors.
For more details, please contact :
Email: sales@healthfulbio.com
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