How do you become nearsighted? How are my eyes nearsighted?

It's not caused by family reasons, but it's all tears.

Playing with your phone without moderation.

Smoking to the human body is a variety of harm, he can hurt our lungs, may also cause damage to the eyes, if you want to protect your eyes, you must prohibit smoking, in the process of smoking, the oxygen inhaled by the human body will be consumed, so it is easy to affect the retina.

In this information age, electronic products are becoming more and more popular with everyone, and we are inseparable from electronic products, when using electronic products, we must pay attention to eye protection, so that it is not easy to hurt the eyes. First of all, we must not use our eyes at close range, no matter what we look at, we must hold it at a certain distance from our eyes, so that it is not easy to hurt our eyes.

In order to make the most of their time, some teenagers will read a book while walking or in a walking car, which is not good for the eyes. Because the carriage is shaking, the body is shaking, the distance between the eyes and the book cannot be fixed, and the lighting conditions are not good, which increases the burden on the eyes, and often this may cause myopia.

In the third grade of primary school, I played games like Moore Manor, played every day, especially on Saturday morning, after breakfast, I started playing games, I could play all day,,, but I became myopia,,, and I was short-sighted,,, terrible,,, mainly playing games without moderation, and now I regret it.

A punch from someone else can also make the eyes short-sighted immediately.

Children who sleep less are more likely to develop myopia. During the period of rapid growth and development, especially at the age of 7-9 and 12-14 years, some children will become myopic if they get less sleep.

According to relevant information, juvenile myopia is mostly formed by long-term eye proximity. Adolescents have a strong ability to adjust their eyes, and can still see objects clearly when the distance between books and their eyes reaches 7-10 cm, but if they often read and write at this distance, the adjustment of their eyes will be abnormally tense, which can lead to the formation of refractive (accommodative) myopia, which is the so-called pseudomyopia.

There will be a lot of dust on our face every day, we must pay attention to washing our face before going to bed, so as to achieve the effect of eye protection, if we do not wash our face, dust and bacteria can easily enter the eyes, causing damage to our eyes. Washing your face every day before going to bed and doing a good job of cleaning your face can effectively reduce eye infections and is also good for eye protection.

Most teenagers do not rest for 3-4 hours in a row after reading books, doing homework, watching TV, etc., and even insist on going to bed and resting until late at night. In this way, the muscles inside and outside the eyes are in a tense state for a long time and cannot be rested, and over time, when looking at a distance, the muscles of the eyes cannot relax and are spasmodic, and when looking at a distance, they feel blurred and form myopia. This is the reason why some students have a significant loss of eyesight after a summer vacation.

Generally, after 40-50 minutes of continuous reading, writing, or watching TV, you should take a break or look into the distance for a while.

I stayed up late at night to play with my mobile phone, and when I woke up in the morning, I was also playing with my mobile phone, fortunately my grades were not bad, or my mobile phone would be broken (

Both parents are nearsighted, and their children are susceptible to myopia. The degree of inheritance increases with the progression of myopia, and in general, there are not many myopia inheritances below.

The second year of junior high school, there is more homework, and often look at the mobile phone**, my eyes are still good when I was in elementary school, this time I sat in the third row and couldn't see the blackboard clearly, I went to the optical store to check that myopia was 225 degrees, and I put on glasses, and then I learned from the pain, I didn't dare to zuo anymore, and my eyesight stabilized, and I still wore glasses of more than 200 degrees, but the fact that the glasses couldn't be taken off has always made me regret.

At the time of the college entrance examination, staying up late every day, I couldn't get eight hours of sleep at all. As a result, I became myopic after the exam.

I played games every day during the summer vacation, and I was nearsighted by 200 degrees at the beginning of school. By now, the third year of junior high school has been 700 degrees.

Lying on the table to read the writing homework, lying on the side playing with the phone. The result is now 195 in the left eye and 495 in the right eye (

Always play with the phone with one hand, always look at the phone with one side.

The eye is a sphere, there are many structures in it, the most important area of the optical medium is the lens, just like the convex lens, it can adjust the focus to the retina under normal circumstances, if the adjustment function of the eye is involved, the focus can not be gathered on the retina, if myopia is gathered in front of the retina, then the image we see is blurred, and another point is that if the eye is deformed, it will also produce myopia, when the eyeball becomes longer, the focus distance remains the same, and the focus falls relatively to the front of the retina. That's why we wear concave lenses for myopia, just to move the focus back, which we know when we read junior high school physics, isn't it?

The main cause of myopia is visual fatigue, which impairs the visual accommodation function.