What are the main causes of myopia There are three causes of myopia

Myopia can be divided into two types: true myopia and pseudomyopia. The cause of pseudomyopia is mainly due to long-term excessive use of the eye, which leads to excessive adjustment and spasm of the ciliary muscle, which makes the lens convex, resulting in changes in the refractive power of the whole eye, and the myopia caused by it is called pseudomyopia; True myopia is caused by long-term close-up use of the eye, which causes the eye axis to be over-elongated, resulting in changes in the refractive power of the entire eye, and the myopia caused by it is called true myopia. Pseudomyopia can be reduced or even returned to normal by resting and taking some necessary measures.

True myopia is caused by the elongation of the eye axis, so there is no rest or measures to reduce the degree of true myopia.

Myopia is a multifactorial disease, genetic factors account for a part, if both parents or one of the parents are myopia, the child's chance of myopia and the development of myopia are greater than other children. In addition, there are many acquired factors, and environmental factors also play a very important role. If you often do not pay attention to eye hygiene, such as reading and writing in dim lights, bumpy cars, or working more closely, loving sweets, reading and writing homework very closely, etc., as well as the rapid development of children's height, it will cause the eyes to develop relatively quickly, which will cause myopia.

Ophthalmologist Shi Yongli Profile: Director of the Department of Ophthalmology, working in a tertiary hospital for more than 10 years, good at cataract, glaucoma, pterygium surgery and various ocular surface diseases, dry eye syndrome, keratitis and pigmentitis, fundus disease, various complex eye diseases, systemic diseases, ocular complications and difficult diseases.

1. Congenital heredity.

In terms of congenital heredity, if both parents are patients with high myopia, then their children will have a much higher chance of suffering from high myopia than children from ordinary families, which is related to genes.

2. Improper use of eyes.

Today, with the rapid development of science and technology, television, computers, mobile phones, ipads and other electronic products have increasingly filled our lives.

3. Picky eaters.

Unscientific diet is also one of the causes of myopia. Especially in the period of growth and development, children and adolescents must pay attention to eating less sweets, not picky eaters, and eat more foods containing vitamins A, C and calcium, which are good for the eyes.

At present, the main factor is caused by improper use of eyes.

Therefore, the commonly used methods of correcting vision are:

1。Don't get tired of your eyes. Specifically, it is not to use your eyes for a long time and at high intensity, pay attention to rest, and of course, doing eye exercises is also a way to relax your eyes.

2。Take control of your child's screen time. Children should be lively and active, do not let children stay in front of the TV and computer all day long, adults should take children out for a walk or play when they have time, and there are many benefits of outdoor activities.

3。Pay attention to the posture of your child looking at and writing, and develop good habits from an early age.

4。Whether it's studying or watching TV, you must control your time and pay attention to the combination of work and rest.

5。Pay attention to eye hygiene, don't let children rub their eyes with dirty hands, tell children the importance of eye protection, and let children consciously take care of their eyes, because adults can't pay attention to children every second.

6。Eating problems. Don't be picky eaters, you should mix your diet reasonably, don't overeat, let your child eat more vegetables and fruits, drink more water, eat less junk food, carrots and pork liver are very good for the eyes.

7.Timely supplementation of vision nutrients is the most important and fundamental. It is recommended to take Joyeye Vision Nutrients, take it with warm water, and insist on taking it for a period of time, the child's myopia will gradually decrease, and the younger the age, the easier it is to recover.

What causes myopia? Do you know.

Bad eye habits are the main cause of eye myopia, myopia also has a certain genetic probability, for people with high myopia is prone to genetic phenomena, for people with a family history is easy to get myopia, so we should pay attention to do a good job in eye health care, adhere to eye exercises, often look into the distance, do a good job in preventing eye diseases.

If the eye is too close and the time is too long, the eye muscles cannot relax and become spasmodic.

Lighting is too strong or too weak, causing eye irritation.

Read a book while driving or walking. The distance between the eyes and the book cannot be fixed, which increases the burden on the eyes.

Genetic relationship, mainly the inheritance of high myopia.

Caused by watching electronic products and TV, or writing homework with improper posture, and prolonged close proximity. Of course, the main reason is overuse of the eyes.

The causes of myopia are complex, and there are many influencing factors, and the main factors are roughly divided into genetic factors and environmental factors.

1.Genetic factors: According to a large number of survey data, the consensus conclusion is that high myopia is related to heredity, and there is a large difference between moderate myopia and less than moderate myopia.

The genetic type of high myopia is concluded by most survey data to be autosomal recessive. As a result, parents and offspring may not develop myopia at the same time. Heredity is often influenced by the objective environment, that is, the conditions of life, which makes it mutate, which increases the complexity of heredity.

2.Environmental factors: environmental factors are mainly close operation and poor working environment, which is the oldest theory, although there are still some controversies, but from a large number of domestic and foreign relevant research reports, it has been recognized that heredity and environment are the main reasons for the formation of myopia, and pointed out that environmental conditions are the objective factors that determine the formation of myopia.

Causes of myopia: can be divided into two categories: congenital and acquired1Congenital heredity:

That is, pathological high myopia, patients often have a long eye axis in early childhood, and even more than 2,000 degrees when they grow up, because it is caused by heredity, so there is no effective way to prevent it from continuing to deepen. 2.Acquired environmental factors:

It is caused by multiple factors, that is, many reasons may cause myopia, but it is generally believed that it is mainly due to environmental influences such as excessive eye use and narrow living space at close range.

From normal to high myopia in just 4 steps! The development of the eyes actually starts from farsightedness, and newborns are basically farsighted, and then slowly return to normal with the development of the body. Therefore, the eye has to go through the process of farsightedness, emmetropia, and myopia, and if it can't stop the car, it will continue to overdevelop.

Hyperopia - emmetropia - Stop - Pseudomyopia - True myopia - High myopia

Wuhan Egger ophthalmology experts suggest that children should have regular eye examinations from 6 months old, and should establish a "visual health record" at the age of 3.

The main causes of myopia are, 1. Reading for a long time, looking at mobile phones and computers for a long time. 2. Incorrect reading posture, such as being too close to books, TVs, and computers. 3. Do not do exercises to protect your eyes.

In the past, it was thought that myopia was caused by genetics and eye diseases. But recently scientists have discovered that a lack of adequate outdoor activity and light exposure can also lead to myopia. During outdoor activities, proper light can help the retina of the eye release dopamine, which elongates the eye axis and helps the normal development of the eye.

How to stop the progression of myopia?

Spend less time using your eyes and less use of electronics.

Increasing outdoor interaction can prevent the progression of myopia.

Traditional Chinese medicine massage, including temples, etc. You can also use eye patches and eye patches to alleviate myopia, such as the Chinese herbal eye patch of Mingdan Eye Force, which can prevent myopia.

Reading, writing, doing homework, watching TV, etc. for 3-4 hours in a row without rest, the eyes are overburdened, and the muscles inside and outside the eyes are in a state of tension for a long time without rest. Over time, when looking at a distance, the muscles of the eyes cannot relax and become spasmodic, so that the vision of the distance is blurry and myopia is formed. Some students even lost their eyesight during a summer vacation.

2. Genetic factors: especially refers to high myopia, mostly related to autosomal recessive inheritance, such as both parents are highly myopic, 100% of the children are also highly myopia, such as both parents have one high myopia, the other is heterozygous, the so-called heterozygous refers to the recessive gene, but the performance is normal, then the child has a 57% probability of myopia.

The causes of myopia are mainly due to genetic factors and environmental factors, which are already well established. The disease of low-to-moderate myopia is uncertain, but the heritability of high- and low-grade myopia will be greatly increased. High myopia is chromosomally recessive, and if both parents are highly myopic, the probability of the child developing myopia will reach 90%.

We may be affected by some environmental factors in our daily life, such as poor eye habits, looking at mobile phones and computers for a long time, reading books and writing homework for a long time and at close range, which may cause myopia.

Generally speaking, there is a possibility that myopia above 600 degrees is hereditary, but it is possible. Your daughter's may be related to her own eyes, that is, when you go to the hospital, you may be cured, pay attention to eye posture, time, and light.

At this stage, the key reason for myopia is that the eyes do not have time to release pressure after long-term eye use, so they can use the eyes for two hours to release the pressure moderately, and the acupoints around the eyes can be used to reduce the discomfort, and you can usually eat more vegetables and fruits to clear your eyes.

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The education we received since childhood tells us that it is because your eyes are too tired, such as looking at your mobile phone for a long time, watching TV, doing homework, being too close to the desktop, etc., but some scientists have found that the cause of myopia is not eye fatigue, but because of the lack of light in the eyes. The myopia rate of human groups in the current society is quite high, and when I was a child, the classmates who wore glasses in the class would become the focus, and everyone said, you don't have glasses to protect it, but now the students who don't wear glasses have become the focus. Some people believe that the reason for the sharp increase in the rate of myopia in humans is the lack of natural light in the human eye.

In the process of human evolution, it took tens of thousands of years for the eyes to adapt to natural light, and artificial light only appeared for a few decades, and the human eye has not yet evolved the ability to adapt to artificial light.

Artificial light in today's society, such as the mobile phone and computer that we look at the most every day, we all look directly at it, that is, directly look at the light source, which will cause damage to the eyes. The University of Queensland in Australia conducted a follow-up survey of 100 children and found that students without myopia received significantly more and higher light every day than children with myopia. Myopia occurs because the eye axis grows too fast, which stretches the eyeball and the focus is not accurate.

Outdoor natural light is a kind of full-spectrum high-intensity light, which is conducive to promoting the secretion of dopamine and can inhibit the growth of the eye axis, but artificial light sources do not have this function. The human eyeball is like a lens that can be autofocused, looking at things close for a long time, the lens will maintain this shape, losing the ability to adjust things that are far away, going out for a walk more, looking more into the distance, to put it bluntly, it is an exercise for the lens, just like the arm muscles.

In this age of artificial light sources everywhere, if you want your child not to be nearsighted, take him out and about often.

Myopia is determined by two factors: genetics and environment.

1. Children do less outdoor sports, spend too much time reading on their mobile phones, stay up late, and read at close range.

2. Long-term fatigue of the ciliary muscle of the child's eyes causes myopia.

The causes of myopia are still not well understood, myopia is caused by a variety of factors, and in recent years there has been a lot of evidence that environmental and genetic factors are involved in the occurrence of myopia

Environmental factors: the occurrence and development of myopia is very closely related to the near use of the eye, the adolescent eyeball is in the stage of growth and development, the adjustment ability is very strong, the extensibility of the eye wall is also relatively large, reading, writing and other close distances, not only need the play of the adjustment role of the eye, but also the double eyeball should be cohesive, so that the extraocular muscles exert a certain pressure on the eyeball, over time, the anterior and posterior axis of the eyeball may become longer, resulting in the occurrence of myopia.

1. Heredity. High myopia is an autosomal recessive disorder. If both parents are highly myopic, the likelihood of a child being highly myopic is high.

2. Eye diseases. Symptoms such as cataracts, ciliary muscle spasms, etc., will increase the convexity of the lens, causing myopia. Eye diseases are very harmful and can even lead to blindness.

3. Physical fitness. Improper work and rest for a long time, malnutrition, irregular life and rest, and anemia caused by poor physical foundation may cause myopia.

4. Environment. Long-term eye use, poor lighting environment, and improper sitting posture in class can all cause myopia. Even if the ocular adjustment ability is particularly strong, but after a long time of close study, work, and excessive fatigue of the ciliary muscle, accommodative myopia will appear, which is not taken seriously, and if it continues to develop, it may evolve into true myopia.

5. Improper diet. Chromium in food has a lot to do with myopia, especially in adolescents, where the need for chromium is greater than that of adults. The intake of large amounts of sugar and protein in the body can lead to a decrease in internal chromium stores and a loss of calcium, as well as changes in the osmotic pressure of the lens of the eye, leading to myopia.