Abstract: today’s students have great learning pressure and heavy study; Or it is too long to face the mobile phone and computer, which will lead to myopia, so myopia begins to become younger and more serious. In the face of such problems, both students and parents should pay attention to them., With the development of society, there are more and more electronic products; Many students face their mobile phones and computers too long, which will easily lead to myopia. The phenomenon of low age myopia is becoming more and more serious. For the sake of personal health, pay attention to some details in life. So what are the causes of myopia?, Myopia is younger. Among the students aged 8 to 12 in China, about one in 47 children has myopia. The incidence of myopia is about 23%, about 55% are middle school students and 76% are college students. There are about 300 million people with myopia, of which about 200 million are young people., In fact, myopia is a disease related to lifestyle and an evolution of human beings to adapt to modern lifestyle. In order to cooperate with close work, we must have a good close reading ability and adapt the eyes to the environment. Eskimos are a typical example. When they use their eyes from a long distance, they are not short-sighted. When modern civilization entered the Arctic Circle, Eskimos also showed myopia., It can be seen that living in modern society, naturally, our bodies will instinctively adjust to adapt to this life. Mild myopia in life has little impact on most people. Once moderate and high myopia occurs, the eye axis becomes longer and the retina and choroid will degenerate, it will enter pathological myopia, which may lead to retinal detachment, retinal hemorrhage, detachment after vitreous liquefaction, and even blindness. Therefore, what we should pay attention to is to avoid premature myopia in children’s eyes. Myopia is too serious, which will bring trouble to the body and life., I. too much light will cause myopia. If you don’t adjust when approaching an object, you can’t see clearly after imaging the object on the retina. Then, the curvature of the lens is increased by contracting the ciliary muscle, which can make the image of the object on the retina clear. However, for a long time, when you see a near object, it extends axially, but when you see a distant object, the eyes cannot be adjusted before retinal imaging. Only wear glasses to correct the diopter of the eyes. Therefore, the essence of myopia is the adaptive response of the ocular axis to long-term visual objects., So, why is it not easy to be short-sighted when the light is dark? There is a phenomenon called night myopia. You can see clearly during the day, but you need to wear proximity mirrors at night. The reason is that at night, due to the difference of refraction, the visual imaging will be forward., The development of
society is increasing, and there are more and more electronic products; Many students face their mobile phones and computers too long, which will easily lead to myopia. The phenomenon of low age myopia is becoming more and more serious. For the sake of personal health, pay attention to some details in life. So what are the causes of myopia?
myopia younger
in Chinese students aged 8 to 12, about one of 47 children has myopia. The incidence of myopia is about 23%, about 55% are middle school students and 76% are college students. There are about 300 million people with myopia, of which about 200 million are young people.
in fact, myopia is a disease related to lifestyle and an evolution of human beings to adapt to modern lifestyle. In order to cooperate with close work, we must have a good close reading ability and adapt the eyes to the environment. Eskimos are a typical example. When they use their eyes from a long distance, they are not short-sighted. When modern civilization entered the Arctic Circle, Eskimos also appeared myopia.
it can be seen that living in modern society, naturally, our bodies will instinctively adjust to adapt to this life. Mild myopia in life has little impact on most people. Once moderate and high myopia occurs, the eye axis becomes longer and the retina and choroid will degenerate, it will enter pathological myopia, which may lead to retinal detachment, retinal hemorrhage, detachment after vitreous liquefaction, and even blindness. Therefore, we should pay attention to avoid premature myopia in children’s eyes. Myopia is too serious, which will bring trouble to the body and life.
1. Too much light will cause myopia.
if you don’t adjust when approaching an object, you can’t see clearly after imaging the object on the retina. Then, the curvature of the lens is increased by contracting the ciliary muscle, which can make the image of the object on the retina clear. However, for a long time, when you see a near object, it extends axially, but when you see a distant object, the eyes cannot be adjusted before retinal imaging. Only wear glasses to correct the diopter of the eyes. Therefore, the essence of myopia is the adaptive response of ocular axis to long-term visual objects.
so why is it not easy to be short-sighted when the light is dark? There is a phenomenon called night myopia. You can see clearly during the day, but you need to wear proximity mirrors at night. The reason is that at night, due to the difference of refraction, the visual imaging will be forward.
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experiments show that monkeys raised in dark houses can lead to hyperopia. Therefore, when you look at an object in a dark light, compared with when you look at an object in a bright light, the image of an object in a dark light is forward and the image of an object in a bright light is backward. In this way, when the light is bright, the elongation of the ocular axis is a natural response.
2. Turning on the light to sleep is easy to hurt the eyes.
reported that experts investigated the parents of 479 children aged 2 ~ 16. The results showed that the proportion of myopia was 10% when the baby slept in a dark room before the age of two; Sleeping in a room with a small night light, the proportion of myopia is 34%; Sleeping in a room with headlights on, the proportion of myopia is 55%.
all physiological functions of the human body have a stable circadian rhythm, including the rhythm of daily sleep and wake-up. The eye is a human organ that senses light, that is, it is transmitted to the brain through the day and night law of the eye. If the body is not static, the secretion of melatonin (melatonin) in the brain is inhibited, which breaks the circadian rhythm, growth law and endocrine level, which will not only lead to precocious puberty, but also the growth of ocular axis.
3. Reading in the sun hurts your eyes
many people have the experience of reading in the sun, just because they have seen it for a period of time, they will feel itA shadow lingers in front of you and moves wherever you look, which is like the effect of macular area stimulated by light. The sun contains infrared rays and ultraviolet rays that cannot be seen by human eyes. If the eyes are directly irradiated by ultraviolet radiation for a long time, they will damage corneal cells and make the eyes feel severe pain. They can return to normal after a few days. It is very harmful to read in the sun and let the sun shine directly on your eyes. Even if the sun does not directly shine on the eyes, the reflected light is also strong in the sun, making the eyes uncomfortable for a long time, resulting in photophobia and eye tingling. Reading in the sun is a dangerous behavior. So often, it will lead to excessive regulation of ciliary muscle, which will not only make people suffer from myopia or deepen myopia, but also may cause damage to the retina, especially the macular region, reduce visual sensitivity, and even cause permanent loss of vision.
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hope that parents and children should realize the seriousness of myopia. Myopia will have a certain impact on life. Severe myopia may cause blindness, so we must pay attention to it in daily life. Don’t face electronic products for too long. Don’t read in the light. If your studies are too busy, you should also have a proper rest.