What are the types of myopia in adolescents and children?

Myopia in adolescents and children, 1. Pseudomyopia: due to the spasm of the ciliary muscle of the eye caused by long-term close eye use, the lens cannot be adjusted normally to see the distance, and the vision decreases and squints, which can be recovered by eliminating fatigue and relieving the ciliary muscle.

2. Mixed myopia: the accommodative spasm of the ciliary muscle of the eye is not relieved in time, causing lens lordosis, and there are functional factors of pseudomyopia and organic changes of true myopia, accounting for about 52% of the total myopia. The false part can be removed, the true part is difficult to change, and the diopter can be reduced later.

3. True myopia: Most of this type of myopia is related to the development of the anterior and posterior diameters of the eyeball, that is, axial myopia. After myopia, no correction and control measures are taken, but glasses are worn, and the ciliary muscles of the eyes are not exercised, which causes the intraocular aqueous humor metabolism to be blocked, and the intraocular pressure continues to increase, so that the eye axis is extended backward and axial myopia is formed.

Axial myopia is irreversible and cannot be corrected.

Beijing, October 26 (China Youth Daily, China Youth Network reporter Fan Weichen) Today, the Ministry of Education held a press conference, Wang Dengfeng, director of the Office of the Mechanism of the National Joint Conference on Comprehensive Prevention and Control of Myopia in Children and Adolescents, and Director of the Department of Physical Education, Health and Art Education of the Ministry of Education, disclosed at the meeting that the overall myopia rate of children and adolescents in the country in 2019 was a decrease of one percentage point compared with 2018. This is an increase of one percentage point compared to 2019, but still a decrease of one percentage point compared to 2018.

Wang Dengfeng said that the prevention and control of myopia in children and adolescents should adhere to the principle of "one increase, one subtraction and one guarantee", "among them, 'one increase' is to increase physical exercise, 'one reduction' is to reduce unnecessary homework burden, and 'one guarantee' is to strengthen policy guarantees".

Truly reducing the excessive burden of schoolwork is the basic problem of myopia prevention and control in children and adolescents, and it is also the most difficult problem. Wang Dengfeng said, therefore, first of all, it is necessary to solve the problem of ideological understanding, reduce what should be reduced, increase what should be increased, and the two-pronged approach can truly promote the healthy development of children's and adolescents' vision.

It is understood that in the next step, the Ministry of Education will take targeted myopia prevention and control measures according to the actual situation of children and adolescents in different school stages, different types of schools and different regions; Scientifically and accurately guide all localities to play the role of leading and the main position of schools, and promote social participation; Scientifically and accurately guide all localities and schools to reduce the academic burden of students, reduce the use of electronic products, reduce the rate of new myopia, slow down the progression of myopia, and reduce the rate of high myopia; Strengthen students' outdoor activities and physical exercise, implement vision monitoring, and improve the visual health environment.

In addition, the National Health Commission, together with the Ministry of Education and other departments, is taking a series of action measures to jointly promote myopia prevention and control, such as signing a letter of responsibility, establishing an evaluation and assessment system, comprehensively finding out the base of myopia rate, strengthening monitoring and evaluation, promoting appropriate technology, and extensive social education.

The National Health Commission has carried out pilot projects for the prevention and control of myopia in children and adolescents in 183 districts and counties across the country, and the next step will be to start the implementation of the second batch of pilot work, and strive to achieve full coverage of monitoring in counties (districts) within its jurisdiction in 2021 on the basis of achieving full coverage of monitoring and evaluation at the prefecture and city level.

According to the latest data from the National Health Commission, the overall myopia rate of children and adolescents in China in 2020 is that the myopia rate of kindergarten (data only covers large classes) is up to the primary school stage, the junior high school stage, and the high school stage. Among them, 10 are highly myopia, and more than 1 3 are moderate myopia, that is, the proportion of moderate and high myopia is nearly 50.

At the same time, the data shows that the national myopia rate is "high in the east and low in the west, high in the north and low in the south", and there is also a gap between urban and rural areas. The rate of myopia in urban areas is 8 percentage points higher than that in rural areas, but the growth rate in rural areas has been higher than that in urban areas in the past two years. This is secretly in line with the popularity of electronic products and the trend of "stay-at-home".

In addition, the detection rate of poor vision among college students is not optimistic. The Ministry of Education has issued a document in June this year, starting from the fall semester of 2021, requiring local education departments to standardize data reporting, and schools should designate special personnel to be responsible for the reporting of the main information and data of primary and secondary school students' vision monitoring. The reported data of vision monitoring results mainly include binocular unaided visual acuity and refraction of primary and secondary school students.

The new semester has started for a month, and it will be interesting to see how it will be implemented in various places.

At present, the myopia rate of children and adolescents in China is .

The National Health Commission (NHC) organized a free clinic at Beijing Tongren Hospital this morning, focusing on children, adolescents and the elderly. According to data released by the National Health Commission, the overall incidence of myopia in children and adolescents in China is 81% for high school students and 90% for college students. Myopia has become an important problem for national health.

Different age groups are prone to eye health problems and have different priorities. During the fetal period, pregnant women should pay attention to genetic examination of the fetus for hereditary eye diseases; In the neonatal period, attention should be paid to the screening of congenital eye diseases; In early childhood, refractive development files should be established in a timely manner;

Young people should be wary of high myopia, and middle-aged and elderly people should be wary of cataracts.

Young people should reduce visual fatigue and be alert to the occurrence of high myopia; Middle-aged and elderly people should pay attention to dry eyes and be alert to the occurrence of cataracts, presbyopia and fundus diseases.

Premature overdraft of farsighted reserves to delay exposure to electronics.

The main reasons for the increase in the incidence of myopia among adolescents in China are the early exposure to electronic products in infancy and early childhood, which overdraws the reserve of farsightedness; Adolescents generally "touch" the Internet earlier, use more electronic products, and lack of sleep and exercise time. Experts suggest that infants and toddlers before the age of 3 should not use electronic products, and parents should mainly read. The later a child is exposed to electronics, the lower the chance of a child developing myopia.

1. Incorrect posture of reading and writing homework, and insufficient light are one of the important direct causes of myopia.

2. Sleeping too late: not getting enough sleep.

3. Improper way of eye rest: Many children and parents think that after finishing their homework, they can watch TV, play mobile phones, and play video games to relax, which is to let children rest, which is wrong.

4. Can't look far: Many children's lives are in the classroom, in the house, in the car, and the time for outdoor activities and looking far away is less than 3 hours a day.

5. Picky eating, too much sweets.

6. Procrastination of homework: Many children do homework for 20 minutes, often for an hour.

7. In the stage of pseudomyopia, they do not pay attention to, do not **, and blindly wear glasses.

8. Too much early childhood, too long exposure to computers, television, too close distance.

9. Nutritional deficiencies, or other diseases.

Now there are more and more children with myopia, and they are getting younger and younger. Children's myopia not only affects children's life and learning, but also makes parents worried. Therefore, it is necessary to take medication in time** to improve myopia.

It is recommended to take Leyan Vision Nutrients, take it with warm water, and insist on taking it for a period of time, the myopia degree will be reduced, and the vision will be improved. It will not affect the child's future education and employment.

Generally speaking, children are divided into three types: pseudomyopia, true myopia, and mixed myopia.

Pseudomyopia: The lens is in a state of tension for a long time because the eyes look at things near for too long, and then cannot relax when looking at a distance, so that it is in a blurry state when looking far, which can be relieved by resting the eyes, but if it is in a state of lens tension for a long time, it can be transformed into true myopia. Pseudomyopia can not be equipped with glasses, pay more attention to eye habits, and to identify pseudomyopia can go to the eye hospital for dilated eye refraction.

True myopia: It cannot be relieved by resting the eyes on its own, and the axial length and lens refraction have developed with the development of myopia, then this myopia can only be corrected by glasses, and the power will increase with age to adulthood.

Mixed myopia: Both pseudo-myopia and true myopia have some degrees. Attention should be paid to the difference in glasses, and it should not be overcorrected.

If the child is already true myopia, then this myopia is also divided into axial myopia and refractive myopia, axial myopia will increase with age to adulthood, and most myopic eyes are axial myopia.

According to the degree, it is low myopia below 300 degrees, moderate myopia between 600 and 300 degrees, and high myopia above 600 degrees. However, progressive myopia in children does not exceed 600 degrees.

When I was a child, I had typical axial myopia, which started at about 10 years old, and was 200 degrees with glasses at the age of 15, and progressed to 600 degrees at the age of 20, and 600 degrees has been stable for 6 years now.

1. If it is divided into mild myopia according to the degree, it generally refers to myopia below 300 degrees, moderate myopia is myopia of 300 to 600 degrees, and high myopia is myopia greater than 600 degrees; 2. According to the myopia component, it is divided into axial myopia and refractive myopia;

Now there are more and more people with myopia, and the reasons for myopia are varied, and many teenagers have myopia because of the incorrect way of using their eyes or using their eyes for too long, so find the cause and actively solve it, don't let the situation become more and more serious, the following will introduce to you what are the causes of myopia in teenagers, and those who want to know will take a look at it.

Love sugar

Teenagers have myopia because they eat too much sugar, usually after the sugar enters the body, they need to consume a lot of vitamin B1, and the reduction of vitamin B1 will affect the vision of the eyes.

Genetic factors

Myopia in adolescents may also be caused by genetic factors, high myopia is also an autosomal recessive inheritance, and low and moderate myopia is multifactorial inheritance, and the role of environmental factors is the mainstay. A very small number of pathological myopia eyes are inherited in an X-linked recessive manner.

Excessive use of the eyes

In addition to genetic factors, most adolescents have myopia caused by improper use of their eyes, especially when working at close range, such as learning computers at close range, practicing calligraphy at close range, practicing piano, and may also be due to insufficient lighting, reading too close, too long, unclear or too small fonts and poor posture are related to the occurrence and development of myopia.

Less activity

The reason for the high incidence of myopia in East Asians may be related to the introversion of adolescents and the lack of time to participate in outdoor activities. Of course, it is also possible that the real reason has to do with the intensity of the time spent working in close proximity.

The above is what are the causes of myopia in adolescents, after reading the above introduction, we should also have a certain understanding, teenagers have myopia problems, first of all, we should find the cause, so that we can solve the symptoms, usually do homework, read books, study should pay attention to sufficient light, after 45 minutes of study, you should rest for more than ten minutes, so that the eyes can be rested.

Now for teenagers in our country, myopia has become a very big problem. If a teenager is nearsighted, he or she will need to wear glasses, and if he or she is not corrected, he or she may wear his or her eyes for the rest of his life. Wearing glasses is a very troublesome thing, so if you can avoid myopia, it is best not to be myopia.

The overall myopia rate of children and adolescents in China is what are the common manifestations of myopia? <>

If a person is nearsighted, he will feel that his eyes are very tired, and if he uses his eyes too much, he will feel that his eyes are very dry. It can be clearly found that when reading a book or looking at a mobile phone, as long as it takes a long time, you will find that your eyes are particularly dry when you blink. Some people will choose to go for eye drops, while others will choose to close their eyes and recuperate.

But as time goes by, myopia gets worse and worse. <>

When a person's eyes are short-sighted, they can't see anything clearly, especially in some distant places, they must wear glasses to see clearly. Sometimes you need to look very close when wearing glasses, and if you do this behavior for a long time, you will find that your myopia is getting higher and higher. If it is highly myopia, then the harm to the eyes is very great, so there are certain conditions, and you must go for corrective surgery when you are not myopia.

Myopia is a very common problem in adolescents nowadays, but it should also be taken seriously. Teenagers should be given less exposure to electronic products, and when they use their eyes excessively, they should try to close their eyes and refresh themselves. And when you are fine, you can do eye exercises, which also has a certain effect on eye care.

If you don't protect your eyes, you may become more and more myopia. And in severe cases, it will cause your retina to detach.

1.Low vision, a progressive decrease in visual acuity when looking and an increasing degree of myopia during refraction.

2.Because they can't see, some children have to tilt their heads and squint their eyes, trying to find an angle that can improve their eyesight and see clearly, so if children are easy to tilt their heads and squint their eyes to see things, they will often be mistaken for strabismus at this time.

3.Some children often blink and rub their eyes, because myopia is easy to see fatigue, which is also a symptom of myopia.