How is myopia caused? Heredity + improper use of eyes

summary

Most of the patients with myopia are caused by improper use of eyes at ordinary times. If your study atmosphere is very tense, you must pay attention to the combination of work and rest and develop a good habit of using eyes. You should not use your eyes excessively. You can rest for 10 minutes every 45 minutes when you read. You can overlook from a distance or close your eyes for rest. It is also necessary to insist on doing eye exercises every day and keep reading Correct posture, as long as you can do these points, generally will not be short-sighted! How does myopia cause tell everybody.

How is myopia caused? Heredity + improper use of eyes

First: genetic factors: myopia has a certain genetic tendency, especially for high myopia. But for general myopia, this tendency is not very obvious. The patients with genetic factors were older than 6.00D. But there are also high myopia, no family history. High myopia belongs to autosomal recessive inheritance, and general myopia belongs to multifactorial inheritance.

Second: development factors: infants are hyperopia because of their small eyeballs, but with the growth of age, the eye axis is gradually lengthened, and the development is normal until puberty. Such as excessive development, the formation of myopia, this myopia known as simple myopia, mostly in school age. Generally, it is lower than 6.00D. When they are about 20 years old, they stop developing. If the progression is very fast in childhood, it will be faster at the age of 15-20, and then it will 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. This kind of myopia can be developed and degenerative in old age, so the vision can gradually decline, glasses can not correct vision. It is rare to have myopia at birth, but very few of them are congenital.

Third: external factors (environmental factors) (1) eye distance is too close. (2) It takes too long to use eyes. (3) The illumination is too strong or too weak. (4) Read while driving or walking. (5) Lie down and read. (6) Lack of sleep. (7) The desk does not meet the requirements and the writing posture is not correct. (8) At present, the influence of space radiation.

matters needing attention

When you look at people, you always like to tilt your head. Don't think it's just a bad habit of the child. After two shouts, it's over. Huaya optometry reminds you that this may be the manifestation of amblyopia. You should take the child to the hospital as soon as possible to "get back" the child's vision.