You should know the common causes of myopia

Abstract: myopia has a certain genetic tendency, which has been recognized, especially for high myopia. It is a common cause of myopia. But for general myopia, this tendency is not very obvious. Those with genetic factors had earlier onset age, mostly above 6.00D., In real life, some people suffer from myopia at a very young age, and many of them suffer from high myopia, which shows that the causes of myopia are likely to be related to the patients themselves and need special attention. What are the common causes of myopia? Let’s talk about the common causes of myopia., Generally, the common causes of myopia are:, genetic quality: myopia has a certain genetic tendency, which has been recognized, especially for high myopia, which is a common cause of myopia. But for general myopia, this tendency is not very obvious. Those with genetic factors had earlier onset age, mostly above 6.00D. But there are also high myopia without family history. High myopia belongs to autosomal recessive inheritance, and general myopia belongs to multifactorial genetic disease., Development factors: infants are hyperopia because their eyeballs are small, but with the increase of age, the ocular axis also gradually lengthens, and their development is normal until puberty. If overgrowth, myopia will be formed. This kind of myopia is called simple myopia, which mostly starts in school age. Generally lower than 6.00D. Development stops around the age of 20. If it progresses quickly in childhood, it will progress faster at the age of 15 ~ 20, and then slow down. This kind of myopia is often higher than 6.00D, and can reach 20d ~ 25d or 30d. This kind of myopia is called high myopia or progressive myopia or pathological myopia. Such myopia can occur and degenerate in old age, so vision can gradually decline, and vision can not be corrected with glasses. Very few have myopia at birth, but very few are congenital. This is also a common cause of myopia., The eye time is too long. Most teenagers don’t rest for 3-4 hours, such as reading books or writing, doing homework, watching TV, and even go to bed late at night. In this way, the muscles inside and outside the eyes are in a tense state for a long time without rest. Over time, when looking at the distance, the muscles of the eyes can not relax and show a spasm state. When looking at the distance, they feel blurred and form myopia. This is why some students’ eyesight drops significantly after a summer vacation. It is generally advocated that you should take a break or look into the distance for a while after reading, writing or watching TV for 40-50 minutes., Less sleep time,

in real life, some people suffer from myopia at a very young age, and many of them suffer from high myopia, which shows that the causes of myopia are likely to be related to the patients themselves and need special attention. What are the common causes of myopia? Let’s talk about the common causes of myopia.

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are common causes of myopia:

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genetic quality: myopia has a certain genetic tendency, which has been recognized, especially for high myopia, which is a common cause of myopia. But for general myopia, this tendency is not very obvious. Those with genetic factors had earlier onset age, mostly above 6.00D. But there are also high myopia without family history. High myopia belongs to autosomal recessive inheritance, and general myopia belongs to multifactorial genetic disease. Development factors of

and

: infants are hyperopia because of their small eyeballs. However, with the increase of age, the ocular axis also gradually lengthens and develops normally until puberty. If overgrowth, myopia will be formed. This kind of myopia is called simple myopia, which mostly starts in school age. Generally lower than 6.00D. Development stops around the age of 20. If it progresses quickly in childhood, it will progress faster at the age of 15 ~ 20, and then slow down. This kind of myopia is often higher than 6.00D, and can reach 20d ~ 25d or 30d. This kind of myopia is called high myopia or progressive myopia or pathological myopia. Such myopia can occur and degenerate in old age, so vision can gradually decline, and vision can not be corrected with glasses. Very few have myopia at birth, but very few are congenital. This is also a common cause of myopia.

spend too much time with their eyes

most teenagers don’t rest for 3-4 hours in a row, such as reading books, writing, doing homework, watching TV, or even go to bed late at night. In this way, the muscles inside and outside the eyes are in a tense state for a long time without rest. Over time, when looking at the distance, the muscles of the eyes can not relax and show a spasm state. When looking at the distance, they feel blurred and form myopia. This is why some students’ eyesight drops significantly after a summer vacation. It is generally advocated that you should take a break or look into the distance for 40-50 minutes of continuous reading, writing or watching TV.

children with less sleep time are prone to myopia. In the rapid growth and development period of children, especially when they are 7-9 and 12-14 years old, if they sleep less, they will cause myopia in some children.

the lighting light is too strong or too weak

if the sun shines on the book, the light is too strong, it will cause strong reflection, stimulate the eyes, make the eyes uncomfortable and make it difficult to see the font; On the contrary, if the light is too weak, the written lighting is insufficient, and the eyes can’t clearly see the font, the head will move forward and get close to the book. In both cases, the eyes are prone to fatigue, excessive adjustment or spasm of the eyes and form myopia.

read while driving or walking

in order to make full use of time, some teenagers will read while walking or in the walking carriage, which is very harmful to their eyes. Because the carriage is shaking and the body is shaking, the distance between eyes and books cannot be fixed, and the poor lighting conditions aggravate the burden on eyes. Often this may cause myopia. The parents of

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are myopic. The parents of

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are myopic, and their children are prone to myopia. The degree of heredity increases with the deepening of myopia. Generally speaking, there is little heredity of myopia below – 3.00d, and high myopia greater than – 6.00D is closely related to heredity.