Visual fatigue is a common problem encountered in people's production and life. There are two main reasons for this problem. One is visual fatigue caused by long-term use of eyes without corresponding protective measures, and the other is visual fatigue caused by lack of eye nutrition.
No matter what the cause of eye fatigue is, it should be treated correctly, because long-term eye fatigue will cause a decrease in vision, so effective relief is needed when fatigued, and taking functional foods that help the eyes is an effective way to relieve eye fatigue. The reason why functional foods can relieve eye fatigue is mainly because their ingredients are closely related to the nutrition needed by the eyes.
Overview of visual fatigue
Visual fatigue is a common problem that people encounter when using their eyes, and visual fatigue is accompanied by decreased vision. This phenomenon has a very obvious negative effect on people's normal use of eyes, and the causes of decreased vision are also diverse. Here we focus on analyzing three points.
The primary reason is various types of refractive errors. The formation of hyperopia, myopia and astigmatism are all closely related to refractive errors. In daily life, people's unscientific eye posture, including poor control of eye light and inadequate or untimely eye protection measures will cause refractive errors.
The second is the opacity of the lens. The lens is a key structure of the eye. The opacity of the lens often causes cataracts, which has a huge impact on vision.
The last one is corneal disease. The cornea is also a key structure of the eye. Corneal opacity can also cause very serious vision loss.
Analysis of types and functional ingredients of functional foods
Vitamin foods
Vitamin foods can effectively relieve visual fatigue, and foods rich in vitamin A and vitamin C are the main ones that can relieve visual fatigue.
The main effect of vitamin A is to promote the regeneration of rhodopsin. In practice, the lack of rhodopsin can lead to night blindness and dry eyes, and more seriously, it can cause corneal softening and corneal ulcers. Eating foods rich in vitamin A can effectively avoid the occurrence of the above eye diseases.
The main effect of vitamin C is to effectively reduce the damage of light and oxygen to the lens of the eye, which is of great significance for protecting the lens of the eye. Due to the effect of vitamin C, cataract disease can be well relieved.
Mineral foods
Mineral foods also play an important role in relieving visual fatigue. In normal eye activities, elements such as calcium, chromium and zinc play an important role.
Among them, calcium is closely related to bone growth. When the eyes are developing and growing, the lack or insufficiency of calcium will cause myopia, so you must pay attention to the supplement of calcium in the process of eye use. The main function of chromium is to activate insulin, thereby ensuring the normal level of insulin supply. The lack or insufficient supply of chromium can also induce myopia.
Zinc deficiency can directly lead to visual impairment, because zinc is the main component of bone and blood structure. Zinc can participate in the metabolism and transportation of vitamin A in the eye and maintain the medium and long-term operation of the retinal pigment epithelium. Zinc deficiency can induce a series of eye diseases.
Lutein food
The efficacy of lutein products is mainly related to lutein. Lutein is the main component of the macula in the eye. Lutein can prevent the aging of the retinal macula and has a positive effect on retinal jaundice.
In clinical trials, lutein can effectively prevent blindness caused by muscular degeneration, and lutein also has an outstanding effect of filtering ultraviolet rays and other light that is extremely harmful to the eyes.
In the current era of popularization of computers and mobile phones, actively using lutein products can effectively reduce the damage to the eyes caused by radiation factors, thereby relieving visual fatigue.
Anthocyanin foods
The main ingredient of anthocyanin products is anthocyanin, which is a plant extract, bilberry extract, which plays a significant role in relieving eye fatigue.
The primary function of anthocyanins is to protect capillaries and promote the regeneration of red blood cells. The capillaries in the eye structure are very developed, and damage to the capillaries will directly cause eye trauma, and anthocyanins have a very obvious protective effect on eye capillaries.
Another significant function of anthocyanins is that they can improve the eye's ability to adapt to darkness, and this improvement in adaptability is also of great help in relieving visual fatigue.
Kelp
The most prominent feature of kelp is its high iodine content. In modern society, kelp is also a very effective food for relieving visual fatigue. The main reason is that kelp extract is rich in mannitol.
The outstanding effect of mannitol is its diuretic effect, which can effectively reduce eye pressure, which has a positive effect on the treatment of acute glaucoma.
In addition, wakame, which is similar to kelp, also contains mannitol, so it is generally used as an auxiliary treatment for acute glaucoma.
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