Although the epidemic is still raging and there are no spectators in the venues, it does not seem to affect the passion of the athletes, especially in China where the first gold medal came so quickly!
Of course, our female compatriots won first ~
On the morning of July 24th, in the women's10m air rifle final, Tsinghua high flyers Yang Qian, 2 1 year-old, turned the tables with her last shot and successfully won the first gold medal in Tokyo Olympic Games, which is also the first gold medal of China team in Tokyo Olympic Games!
In addition to this gold medal, China's Pang Wei won the bronze medal in the men's 10 meter air pistol final on July 24th. On July 25th, China's Jiang won the bronze medal in the women's 10 meter air pistol final. On July 27th, Pang Wei and Jiang won the gold medal in the mixed group10m air pistol, and Yang Haoran and he won the gold medal in the mixed group10m air rifle.
While celebrating the excitement of China's medal winning, many people may have many questions about the relatively unpopular sport of "shooting", such as whether myopia can practice shooting and whether it can rush to the hot search list.
Some people also ask the soul: Is the shooter's eye as sharp as an eagle's eye?
Ok ~ this eagle eye has a good eye ~
First of all, we should know who scored the highest in the shooting competition and how difficult it is to beat ten ring.
On July 26th, Chen Ying, former member of the national women's shooting team, Olympic champion and coach of women's rifles and pistols of the national shooting team, said in a live program in Lianmai Tokyo: "ten ring is probably like a bottle cap, and then it is taken 20 meters away."
If you want to see such a small target clearly, you really need eagle-eye vision, but "shooting tests the adjustment ability of human optic nerve and brain, and (each) sports project challenges its own limits in different ways." Most (shooters) don't have good eyes because the optic nerve is tired every day. "
Chen's explanation also resonated with other guests, because they got the same answer when they asked the Olympic champion, the coach of the national team and Xue, the champion of the women's 10 meter air pistol in Rio Olympic Games. Their eyesight is not very good.
What is even more unimaginable is that shooters can also be highly nearsighted! After all, there is no specific regulation in the Olympic Games, and to what extent myopia is not allowed to participate. For example, Xu Haifeng, the winner of China's first Olympic gold medal, once said that he was nearsighted when he won the first Olympic gold medal for China, but he still achieved a breakthrough of zero gold medal in the Olympic history for China.
China's godfather of shooting, Wang Yifu, once had a vision as low as 0. 1. He once joked that his eyesight was almost enough to participate in the Paralympic Games, but he still won the championship at the Athens Olympic Games.
There are Tan Zongliang, Zhang, Fei ... These China sharpshooters have poor eyesight, not only China, but also Indian sharpshooter Bindra, who beat Zhu Qinan to win the gold medal in men's 10 meter air rifle at the 2008 Beijing Olympic Games, is also a "glasses" man.
Of course, choosing a shooter still needs a certain vision. The reason why the eyesight finally decreased and became myopia was related to long-term training. Due to long-term attention to the same goal, the eyes are in a state of fatigue for a long time, and the decline in vision can be imagined.
Therefore, whether every athlete can struggle in the Olympic Games and finally win a medal deserves our applause. Their suffering is beyond the imagination of ordinary people.
Myopia, the enemy on the road to growth
Although most people can't shoot, when it comes to eyesight, we really need to pay attention, especially to children who are still in infancy. The most common vision problem is myopia.
Five meters away, there are men and women,
Ten meters away, six parents denied it.
Twenty meters away, no matter people or animals,
I am not noble, my world is fuzzy.
Because I'm nearsighted.
This joke, with ridicule, is behind an amazing and cruel reality.
According to the data released by National Health Commission CDC, the overall myopia rate of children and adolescents in China will be 52.7% in 2020, which is 2.5 percentage points higher than that in 20 19. Looking at the myopia data of all school-age children, the myopia rate of 6-year-old children is 14.3%, that of primary school students is 35.6%, that of junior high school students is 7 1. 1%, and that of senior high school students is 80.5%.
That is to say, for every 100 children under 6 years old in China, 14 pairs of eyes are nearsighted. According to the WHO survey, the myopia rate of adolescents in China continues to rank 1 in the world.
Xiao Jian checked some survey data and found that in 1950s and 1960s, the nearsighted population in China accounted for about 10%-20%, and in the past half century, this figure has reached nearly 50%! Of course, not only China, but also other Asian countries are surprisingly high. The media "Sanlian Weekly" used the word "the whole army was wiped out" to describe the myopia problem in Asia.
What's wrong with myopia?
To put it bluntly, myopia is caused by the elongation of the anterior and posterior diameter of the eyeball.
We all know that the eyes see things because of the reflection of light, and the parallel light is refracted through the lens and cornea, so that the object image will fall on the retina, and the generated information will be transmitted to the visual center through the optic nerve, and the object image will be formed by feedback to the retina surface, so that the eyes can see things. If there are lesions in different parts of the eye, it will lead to different degrees of decline in vision.
If the anterior and posterior diameters of the eyes become longer, the projection of distant objects will focus on the position in front of the retina, not just on the retina, and distant objects will be blurred.
Why do children who start myopia always blink and squint when they see things? This is focusing on micro-expressions.
What is more troublesome is that many eye diseases will come to you because of the stretching of the anterior and posterior diameter of the eyeball and the pulling in the eyeball, such as retinal detachment, glaucoma and cataract, and the risk will increase at once.
Tao Yong, an ophthalmologist in Beijing, said in an interview that the myopia rate of teenagers is getting higher and higher, which is very serious. The eyeball will lengthen with the increase of the degree, which may lead to thinning, atrophy, detachment and even blindness of the retina!
But the process of myopia is not achieved overnight. In fact, everyone will automatically get a "hyperopia reserve" of about 300 degrees at the age of 3 (genetic factors and other factors will affect the quota), so the baby is basically hyperopia, and it will not reach normal until preschool. This change is called emmetropia. In other words, the normal vision standard of children under 5 years old is different from that of adults, which is closely related to age.
Farsightedness reserve is like a pre-existing sum of money, which will be consumed continuously when you grow up. In the best state, before 18-year-old adults become independent, the hyperopia reserve is just used up or there is a little left, so you can start your adult life with normal vision.
Myopia is that the baby consumes the hyperopia reserve too fast and is still underage. His eyesight has begun to overdraw because of overuse of his eyes, and he will soon be nearsighted.
It is observed that 85% of children aged 6-8 with hyperopia reserve less than 50 degrees will develop myopia after 2 years; Children with a reserve of less than 100 degrees will have myopia halved after two years.
Who is to blame for myopia?
Ask all mothers this question, and they will definitely say: mobile phone computer game consoles, playing all day, can you not be nearsighted?
But think about it carefully, before the popularity of mobile phones and computers, there were many nearsighted people, and digital products were at best accomplices.
So, do you study too much? When Xiao Jian was a child, he always thought that glasses were a symbol of knowledge and culture.
However, if you don't study, won't you be nearsighted? Is there no myopia for illiterate people?
Is it hereditary? There is this factor. Genetic projects such as twin research have found that myopia is mainly caused by genetic genes. However, genes can't explain the sharp rise of the global myopia rate: 1969, an American tribe in Alaska conducted a myopia observation study, and found that the myopia rate of tribal elders living in extremely cold places was less than 2%, but the myopia rate of their descendants far exceeded that of their ancestors, which could not be explained by genetic inheritance.
A study in Singapore in 2002 found that the number of books read per week, the time spent reading per week and the time spent using computers are not important factors leading to myopia.
The authoritative magazine Nature also published an article with a similar conclusion: reading a few books and reading a few hours a week is not the only relationship with myopia, but the most important environmental factor related to the incidence of myopia is outdoor time. Research shows that it doesn't matter what children do outdoors. Whether it is sports or picnics, as long as you are outdoors, the incidence of myopia is low.
The relevant experiments conducted by Paris Medical University in France found that the lack of natural light has a certain relationship with the increase of myopia.
So we can sum up the key words to prevent myopia, that is "outdoor", especially outdoor light and space, which have a great influence on children's vision. Reading books on mobile phones at close range for a long time will only encourage abuse and worsen vision problems.
In 2009, German and Chinese scholars cooperated to increase the outdoor activity time of a first-year primary school student in Guangzhou by 40 minutes every day, and followed up for three years. The results showed that compared with the children in the control group, the proportion of these children who were forced to go outdoors was 30% at the age of 9, while the proportion of children in the control group was 40%. Just 40 minutes of outdoor activities significantly reduced the proportion of myopia.
This is also the reason why many medical experts actively popularize science. The most effective way to prevent myopia is to let children do more outdoor activities and expose their eyes to natural light.
Therefore, for example, China's "Regulations on Kindergarten Work", which came into effect on March 1 2006, stipulates that under normal circumstances, the daily outdoor activities of kindergartens shall not be less than 2 hours, and boarding kindergartens shall not be less than 3 hours. On August 30th, 20 18, the Ministry of Education of China and the National Health and Wellness Commission jointly issued the Implementation Plan for Comprehensive Prevention and Control of Myopia in Children and Adolescents. The core of this plan is "one increase, one decrease and one guarantee". "Increase" refers to increasing students' physical education class and physical exercise, and increasing the time and intensity of students' physical exercise on the original basis. "Reducing" means reducing students' unnecessary schoolwork burden and off-campus tutoring burden, which is called "double reduction". "Guarantee" includes not only the improvement of lighting environment, myopia correction and technical guidance, but also "one increase and one decrease", which is guaranteed in system design and specific actions.
What if you are nearsighted?
First of all, myopia can be divided into true and false. As long as there is no lesion in the fundus, it is pseudomyopia, also called accommodative myopia. Generally, the ciliary muscles continue to contract and spasm, the lens thickness increases, and the vision is blurred. If treated in time or through strengthening eye muscle exercise, relaxing muscles and relieving fatigue, vision can return to normal. However, if it is not relieved in time, it will eventually lead to enlarged axial length and pathological changes in the fundus, which will become true myopia.
Although some people think that when children are just beginning to be nearsighted and the degree is not high, they can not wear glasses, or appropriately reduce the degree of glasses to delay the development of myopia. But if you don't wear glasses, you should pay attention to the factors that cause the development of children's myopia, including the child's eye position and adjustment ability. And if you don't wear myopia glasses in time, your child will not be corrected in time. The most direct effect is that his eyesight will decline and he can't see things in the distance clearly. If myopia occurs when you are young, but it has not been corrected correctly for a long time, it is very likely that when you want to correct your child in the future, you will find that even if you wear glasses, you will not be able to achieve normal vision in a short time.
At the same time, if the child's myopia is not corrected correctly for a long time, even if the later degree continues to increase and the vision continues to decline, it will not be noticed.
So weighing the pros and cons, wearing glasses in time will reduce many secondary problems. Moreover, at present, there are many mature technical applications in juvenile myopia lenses, so more professionals believe that if a child is nearsighted, if he does not wear glasses or the degree is not enough, the degree of myopia will be deepened because the retina forms a blurred image.
This also explains a problem that my mother cares about. Can myopia get deeper and deeper with eyes? The two are irrelevant. Unscientific control of myopia, whether wearing glasses or not, myopia will deepen. The correct approach should be scientific correction under the guidance of a doctor. When you can't see clearly, you need to wear appropriate glasses as soon as possible.
By the way, there are all kinds of corrective instruments for treating myopia on the market, such as pinhole mirror and eye patch. No matter what stars speak for them or what goods online celebrities bring, Xiao Jian is responsible for telling you that there is no reliable research to prove that these so-called myopia therapeutic apparatus and Mingmu patches can treat and delay myopia. As for doing eye exercises since childhood, there is no evidence that eye exercises can prevent myopia, and there is a risk of getting pink eye if you wash your hands improperly.
If you can't go out because of the epidemic or typhoon, you can try Dr. Tao Yong's "20-20-20" rule: take a rest for 20 seconds every 20 minutes, look away from the screen and look 20 feet (about 6 meters), don't squint, concentrate on staring, recognize its outline, and keep your eyes in the process of activity, which plays a role in adjusting sensitivity.