The first "China Compulsory Education Quality Monitoring Report" issued by the Ministry of Education shows that the detection rate of poor eyesight among fourth-grade primary school students has reached 36.5%. The myopia rate of junior high school students, senior high school students and college students has exceeded 70%, and the myopia rate of teenagers has ranked first in the world.
Think about it. When we were young, wearing glasses was not a common phenomenon, and it was rare in our parents' time. Nowadays, in addition to parental inheritance, there is another important reason for children's myopia, which is the increase of electronic products.
From birth, children are surrounded by various electronic products, and mobile phones and tablets can be seen everywhere. Many children's games are centered around electronic products.
Children's visual system is underdeveloped, and they are exposed to many electronic products, which are easily damaged by screen light sources, leading to myopia.
In addition to myopia, electronic products have many adverse effects on children, such as affecting children's concentration and indifference in interpersonal communication, but the most direct impact on children is vision problems.
Why electronic products can harm children's eyesight is closely related to electronic products. First of all, children will blink more when they look at the screen, because staring at the screen for a long time will cause dry eyes, and the light radiation of the screen will inhibit the abnormal function of retinal photoreceptor cells.
Frequent changes in screen brightness due to screen update frequency will lead to ciliary muscle fatigue. Even adults will feel tired after looking at their eyes for a long time. Children do not have a well-developed visual system, which leads to disorder and myopia.
Other major causes of myopia in children are myopia caused by electronic screens. Nowadays, the reduction of children's outdoor activities will also cause problems in their visual system, because outdoor things from far to near can exercise children's visual ability and promote development. However, if you always stay indoors, you can see that the distance is very close, and the child's vision cannot be changed from far to near, thus forming myopia.
The lack of mineral elements also makes children particularly prone to myopia. Medical research shows that calcium and chromium are essential mineral elements to ensure children's normal vision. Calcium helps to maintain the normal pressure of children's eyes, and chromium can maintain the diopter of eyes. These two elements play an irreplaceable role in the development of vision, and most of the refined rice flour we eat every day has lost chromium.
Eating snacks and sweets, especially sweets, will also affect children's eyesight. Eating too many sweets will consume a lot of calcium. Everyone knows that children who eat too much chocolate will be short of calcium, which is the reason.
Moreover, eating too much sweets will lead to an increase in blood sugar and increase the osmotic pressure of the lens, which will cause myopia.
Secondhand smoke tobacco contains a very toxic cyanide. If it accumulates to a certain extent in children with poor detoxification ability, it will lead to toxic amblyopia, which is manifested as myopia or other eye diseases in children's eyeball development.
Another thing that many people don't think of is noise.
According to the research, when the noise intensity is above 90 decibels, the sensitivity of visual stem cells in the fundus retina to distinguish the brightness of light begins to decline, and the time to distinguish the weak light response is prolonged. When the noise intensity exceeds 45 decibels, 40% people's pupils will be dilated. When it reaches 1 15 decibels, the adaptability of eyes to light brightness will be reduced by 20%, and the color perception will be weakened.
Therefore, children who live in noise for a long time still have a great influence on their eyesight.
Finally, we all know that long-term incorrect eye posture will make children with eyeball dysplasia nearsighted.
So how to prevent children from myopia? 1. Reduce the use of electronic products
For children, electronic products are harmful. In fact, there is no reason for parents to let their children play with mobile phone tablets, such as coaxing children or for early education, without using electronic products.
For children, electronic products are Pandora's box. Once opened, it will bring endless harm.
Don't overestimate children's self-control ability, thinking that adults can't get rid of the temptation brought by mobile phones, let alone children.
To reduce the frequency of children's contact with electronic products, parents should first set an example. After having children, it is best to watch less mobile phones or play games on the computer before playing electronic products.
Don't let children think that electronic products are used for entertainment. Some children are used to the company of mobile phones and tablets, and it is difficult to quit. Try to find some interests that attract their attention, so that children will not feel bored and naturally play less mobile phones.
2. A balanced diet As I said just now, flour and rice will cause 80% chromium loss, so children can eat some coarse grains in their usual diet.
And snacks, especially sweets, should also be controlled. Sweets are not only harmful to eyesight, but also cause calcium deficiency in children and affect their height.
Supplementing protein and fresh fruits and vegetables can balance the nutritional balance in children, so that children can not only have good eyesight, but also have great health.