What are the key points of vision care? What is the knowledge of eyesight protection?

1.Foods that have a vision-improving effect.

To protect eyesight and prevent eye diseases, we need to start from many aspects, among which paying attention to nutrition is also helpful for improving vision. In the daily diet, the foods that have the effect of improving vision are:

1) Foods rich in vitamin A, which is closely related to normal vision. If vitamin A is insufficient, the regeneration of rhodopsin is slow and incomplete, the dark adaptation time is prolonged, and in severe cases, night blindness is caused. If dietary vitamin A deficiency or insufficiency continues, dry eye disease will occur, and further development of the disease can lead to corneal malacia and corneal ulcers, as well as corneal folds and Bitot's spots.

The best foods for vitamin A** are various animal livers, cod liver oil, fish eggs, poultry eggs, etc.; The provitamin A contained in vegetables such as carrots, spinach, amaranth, alfalfa, sweet potatoes, pumpkin, and green peppers can be converted into vitamin A in the body.

2) Foods rich in vitamin C, vitamin C can reduce the damage of light and oxygen to the lens of the eye, thereby delaying the occurrence of cataracts. Foods that contain vitamin C include fresh vegetables and fruits such as bell peppers, tomatoes, lemons, kiwis, hawthorns, etc. (3) Calcium, calcium is related to the composition of the eyeball, and calcium deficiency can lead to myopia.

If you do not pay attention to calcium supplementation, it will not only affect the development of bones, but also reduce the elasticity of the developing eyeball wall - sclera, and increase the pressure in the lens, resulting in the elongation of the anterior and posterior diameter of the eyeball, resulting in myopia. Foods rich in calcium mainly include milk and its products, shellfish (shrimp), bone meal, beans and soy products, egg yolks and dark green vegetables.

4) Chromium, chromium deficiency is prone to myopia, chromium can activate insulin, so that the pancreatic islets play the maximum biological effect, such as insufficient chromium content in the human body, it will make the function of insulin regulate blood sugar disordered, plasma osmotic pressure increases, resulting in increased osmotic pressure and increased refraction of the eye lens, aqueous humor, thereby inducing myopia. Chromium is mostly found in brown rice and wheat bran, and animal liver, grape juice, and nuts are also rich in content.

5) Zinc, zinc deficiency can lead to visual impairment, zinc is mainly distributed in the body in the bones and blood. The corneal epidermis, iris, retina and lens also contain zinc, which is involved in the metabolism and transport of vitamin A in the eye, maintaining the normal tissue state of the retinal pigment epithelium and maintaining normal visual function. Foods that contain more zinc include oysters, meat, liver, eggs, peanuts, wheat, beans, and grains.

6) Pearl, pearl contains more than 95% 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., pearl taste sweet and salty, with pearl powder with borneol, amber and other "pearl scattered" point eyes can inhibit the formation of cataracts.

7) kelp, kelp in addition to iodine also contains 1 3 mannitol, the surface of the dried kelp has a thick layer of "hoarfrost", it is the mannitol in the kelp, mannitol has a diuretic effect, can reduce the pressure in the eye, and has a good effect on acute glaucoma. Other seaweeds such as wakame also contain mannitol.

: Vision care is based on prevention, helping to eliminate some vision problems caused by acquired factors, so that their vision can get better health care and prevention.

Don't look at your phone for long periods of time. In other words, you can't keep your eyes on a goal all the time, and you must learn to take proper rest. Look into the distance, look.

Pay attention to eye hygiene, do not read books at close range, look at mobile phones and TV for a long time. Eat more carrots.

The key point of vision care is to pay attention to the use of your eyes, try not to stay up late at night, and do more eye exercises.

Look more into the distance, look less at the electronic screen, the ability to express is average, the knowledge learned is limited, I hope to help you!

Dietary supplementation with vitamin 12 and carotene has the effect of maintaining eye health and vision. To control the development of myopia, on the one hand, it is necessary to develop good eye habits, avoid visual fatigue, take regular rest, and use some eye drops when visual fatigue. On the other hand, it is necessary to choose suitable glasses, or you can consider laser myopia surgery.

1. Protect eyesight and prevent myopia (1) Ways to ensure healthy eyesight: First, sit upright and keep your eyes about 33cm away from books. Second, you should read and write for about 1 hour, and go out for activities or see far away for 10 minutes.

3. Don't read books while walking or riding in a car, with the font shaking. Fourth, do not read and write in a place with insufficient light or too strong light in direct sunlight. (2) Causes of myopia:

There are two major factors in the occurrence of myopia: genetic and environmental, and genetic factors are often affected by the objective environment. Myopia caused by nearsightedness is the main cause of myopia. Namely:

Looking at writing at close range for a long time, the use of transitional adjustment is the most important reason for the formation of myopia.

The time of close eye use should not be too long, every 40-50 minutes should be a little rest for 3 to 5 minutes, and looking into the distance will slow down visual fatigue.

2. Read and write, play with the computer, maintain a correct posture, the height of the table and chair should be appropriate, and the distance between the eyes and the reading materials should be about 33 cm.

3. Mix whole grains, meat and vegetables, eat more vegetables and fruits, and don't eat partially. Lack of vitamins in food is prone to night blindness and dry eye disease, and lack of trace elements chromium and calcium in food makes it easy to suffer from myopia.

Fourth, when reading and writing, the light should be moderate, not too strong or too dark, and the light should come from the left front, so as not to obstruct the vision of the hand shadow. The light should be soft, if it is incandescent, it should be between 25 and 40W, and it is not recommended to read in the sun. Because the intensity of light has a direct impact on pupil dilation, too strong light will increase the intensity of eye accommodation, aggravate the intensity of eye labor, and it is easy to cause myopia after a long time.

Generally, desktop lamps should be less than 40 watts.

5. Avoid reading while walking or reading in a walking car. Because the carriage is shaking, the body is shaking, and the distance between the eyes and the book cannot be fixed, the burden on the glasses will increase. Often, this is likely to lead to myopia.

6. Actively participate in physical exercise to enhance physical fitness. As the eyeball follows the target, the ciliary muscles continue to relax and contract, and the synergistic effect of the extraocular muscles can increase the blood perfusion of the eye, promote the metabolism of the eye, and thus reduce eye fatigue. Moreover, the quality of physical fitness is also closely related to the occurrence of myopia in children.

Malnourished and weak children are prone to myopia.

7. Insist on doing proper eye exercises. By massaging the acupuncture points around the eyes to enhance the blood circulation of the eye socket, improve neuronutrition, eliminate the excessive congestion in the eye, and achieve the purpose of relieving eye fatigue, it is conducive to the prevention and treatment of pseudomyopia in adolescents, and is a good way for adolescents to self-care their eyes.

8. Eat less candy and high-sugar foods. Too much sugar will produce a large amount of acidic substances in the blood, and the acid will combine with the salt in the body, especially calcium, resulting in a decrease in blood calcium, which will affect the toughness of the eye wall, make the eye axis easy to elongate, and promote the occurrence and development of myopia.

9. Regularly go to the eye hospital to check the eyesight, and if it is found, it should be corrected in time to prevent the progression of myopia.

10. Eat less sweets. Because sugar needs a lot of vitamin B1 to metabolize in the body, if you consume too much sugar, vitamin B1 will appear insufficient. Vitamin B1 deficiency can affect the growth and development of the optic nerve, leading to vision loss.

Excessive intake of sugar will also reduce the calcium in the body, weaken the elasticity of the eyeball, and promote the development of myopia.

The basic thing is to watch less mobile TV, read books and study to have a break between times, do not lie down to watch, keep an appropriate distance, if you want, you can often do eye exercises, and eat more carrots that are good for your eyes.

I've had the experience of forgetting to take off my crypto-shaped glasses and hurting my eyes, so I've been paying special attention to my eyes since then. I've taken off the hidden lenses now. Then pay attention to the following six points to protect your eyes:

The first point is to develop good scientific eye habits, including not to use the eyes for a long time, stop and relax the eyes every time you use the eyes for more than 40 minutes, look into the distance or do a local massage, and relax.

The second point is to regulate yourself in daily behavior, try to see less or not look at electronic products, because electronic products have caused myopia or aggravation of myopia in recent years, which is very obvious.

Third, you should have a reasonable sleep time and ensure 8-10 hours of sleep every night.

Fourth, if you are a child patient, if you want to protect your eyes, you must add up to no less than two hours of outdoor activities every day, and adults must also reach the standard for more than one hour.

Fifth, in terms of diet, we should consciously have a balanced diet, a balanced intake of various nutrients, the favorite is carotene, lutein, anthocyanins, these foods rich in the above factors or vegetables, fruits, more intake is good for the eyes.

The sixth point is to hope that parents will popularize the common sense of eye protection in their children's childhood, and then really implement the details of eye protection.