What are the factors that cause myopia? Why is myopia?

The causes of myopia include long-term poor eye habits, nutritional deficiencies, and genetic factors.

Myopia is an ophthalmic disease in which parallel rays passing through the eye do not fall to the center of the macula, and fall in front of the retina. The common causes of myopia are as follows:

1.Bad eye habits. Working or reading for long periods of time, especially during the teenage years, because the adolescent eyeball is not yet fully developed, and the changes are great.

When the eye is used for a long time, the ciliary muscle continues to tense and the refractive power of the lens increases, which causes the eye axis to grow for a long time, and the parallel rays passing through the eye can only fall in front of the retina, resulting in myopia.

2.Undernutrition. If you fail to take in enough nutrients, the eye cells will not be able to fully develop and give full play to their functions, which is reflected in the eyes that are compensatory or progressive vision loss or even myopia.

3.Genetic factors. The acquisition of myopia is inextricably linked to heredity, especially high myopia, which is more correlated.

Regardless of whether the acquired or congenital parents are nearsighted or highly myopic, the probability of their children suffering from myopia will also increase. This may be related to genetic changes caused by myopia.

1. Congenital heredity (especially high myopia).

2. Acquired In fact, 70% of people with myopia are caused by this reason.

3. Caused by eye diseases.

4. Malnutrition, calorie and vitamin insufficiency, amino acid balance imbalance caused by partial eating, especially lack of essential lysine and phenylpropionate.

There may be a genetic effect, or overuse of the eye, or it is said that there is a congenital eye disease, depending on the specific cause. Then you must pay attention to eye hygiene when you usually use your eyes.

What are the causes of myopia? What are the causes of myopia? Excuse me?

Myopia is caused by genetics and its own causes, such as overuse of eyes, lack of attention to rest, bad habits, etc. After the formation of myopia, it is difficult to correct it back, which will affect health, cause blurred vision, reduce interest in learning, and bring inconvenience to life!

Improper use of eyes for a long time, playing with mobile phones all the time, and reading posture is wrong. It may cause retinal detachment, retinal tears, permanent damage to photoreceptor cells, etc.

Myopia is generally when the light environment is very low, and they have been reading a book or looking at a mobile phone. There is also the fact that I often squint to see something. Go up close while watching TV**.

These can lead to myopia. The danger of it is that it can make you lose sight of some things around you. And it will be impossible to distinguish between people!

You have to get very close to see things clearly. Sometimes I even offend some people because of myopia. It will also make travel inconvenient.

What are the causes of myopia:

1.Ocular factors. Ocular factors mainly refer to myopia caused by some eye diseases. For example, congenital cataracts, ptosis, corneal lesions, retrocrystalloid fibroplasia, optic neuropathy, etc., can induce myopia.

2.Genetic factors. High myopia is related to heredity, and most of the survey data conclude that it is autosomal recessive, so parents and offspring can not develop myopia at the same time.

3.Environmental factors. Environmental factors are mainly close operations and poor working environment, and environmental conditions are the objective factors that determine the formation of myopia. For example, under the influence of long-term reading or close-up work, it is easy to develop myopia.

3.Regional differences and socio-economic factors. This is related to their living standards, living environment and diet and nutrition. For example, rural students spend less time watching TV and using computers, so the incidence of myopia is lower than that of urban students.

5.Developmental factors: Babies have farsightedness due to their small eyeballs, but as they age, the eye axis gradually lengthens and develops normally until puberty.

If it is overdeveloped, it will form myopia, which is called simple myopia and usually begins at school age. Generally below. It stops developing around the age of 20.

1. Excessive eye use, resulting in eye fatigue.

2. Genetic causes: parents are highly myopia, which will lead to the formation of myopia 3. Some diseases can also form myopia due to changing the refraction of the lens or cornea, so it is necessary to take protective measures as soon as possible to prevent eye diseases.

Therefore, we should protect the eyes in time, and if we use lutein (such as lutein in Yimole) on the eyes in a timely manner, because it has the effects of nutrition, lubrication, antibacterial, and anti-itching, it can activate the tired ciliary muscle, effectively relieve visual fatigue, and prevent the formation of 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.

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.

Tired eyes means not resting your eyes for a long time. The other is the improper use of eyes, such as watching TV too close.

1. Genetic factors: myopia has a certain genetic tendency, which has been recognized, especially for high myopia, and it is also a common cause of myopia. However, in general myopia, this tendency is not so obvious.

For those with genetic factors, the age of myopia is earlier, and it is more likely to be above. However, there are also people with high myopia and no family history. High myopia is an autosomal recessive inheritance, and general myopia is a multifactorial genetic disease.

2. Environmental factors: too close to the eyes, too long time with the eyes, reading in the car or while walking, too strong or too weak lighting, uncontrolled use of mobile phones and computers, etc.

The causes of myopia are common:

1. If parents have myopia, their children have a high chance of suffering from myopia;

2. Bad habits: such as walking and reading, reading while in the car, etc., are easy to cause myopia;

3. Light reasons: too strong or too weak light is easy to cause poor eye vision;

4. Reading books, watching TV, and playing with mobile phones for too long are easy to aggravate the development of myopia;

5. Inappropriate diet: such as partial eating, often eating high-sugar drinks, spicy food, etc., aggravate myopia, and advocate children to eat more high-calcium milk and deep-sea fish oil.

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.

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.

I watched TV before and said that if parents are highly myopia, the chance of their children being myopic will be very high...

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.