Abstract: infants are hyperopia because of their small eyeballs, but with the increase of age, the ocular axis 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., At present, the harmfulness of myopia cannot be underestimated. Many children will have symptoms of myopia, so their eye health will be hurt. Therefore, we should deeply understand the knowledge about myopia. We must thoroughly understand the factors that cause myopia, and know what the relevant causes will be., Causes of myopia:, eye factors. Eye factors mainly refer to myopia caused by some eye diseases. For example, congenital cataract, blepharoptosis, corneal lesions, posterior lens fiber hyperplasia, optic neuropathy and so on can induce myopia. Genetic factors. High myopia is related to heredity. The conclusion of most investigation data is autosomal recessive inheritance, so myopia can not occur in parents and offspring at the same time., Environmental factors. Environmental factors are mainly short-range work and poor working environment. Environmental conditions are the objective factors that determine the formation of myopia. For example, under the influence of long-term close reading or close work, it is easy to produce myopia. Regional differences and socio-economic factors. This is related to their living standards, living environment and dietary nutrition. For example, rural students spend less time watching TV and using computers, so the incidence of myopia is lower than that of urban students., 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. It is rare to have myopia at birth, but very few are congenital., How to prevent myopia?, 1. Maintain a healthy body: pay attention to balanced nutrition, moderate exercise and rest., 2. Prevent eye fatigue: avoid long-time and close work. In addition to adequate rest for the eyes, adequate sleep can reduce eye fatigue.,
at present, the harmfulness of myopia cannot be underestimated. More children will have symptoms of myopia, so their eye health will be hurt. Therefore, we should deeply understand the knowledge about myopia. We must thoroughly understand the factors that cause myopia, and know what the relevant etiology will be.
causes of myopia:
eye factors. Eye factors mainly refer to myopia caused by some eye diseases. For example, congenital cataract, blepharoptosis, corneal lesions, posterior lens fiber hyperplasia, optic neuropathy and so on can induce myopia. Genetic factors. High myopia is related to heredity. The conclusion of most investigation data is autosomal recessive inheritance, so myopia can not occur in parents and offspring at the same time.
environmental factors. Environmental factors are mainly short-range work and poor working environment. Environmental conditions are the objective factors that determine the formation of myopia. For example, under the influence of long-term close reading or close work, it is easy to produce myopia. Regional differences and socio-economic factors. This is related to their living standards, living environment and dietary nutrition. For example, rural students spend less time watching TV and using computers, so the incidence of myopia is lower than that of urban students. Development factors of
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: 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.
how to prevent myopia?
1. Maintain a healthy body: pay attention to balanced nutrition, moderate exercise and rest.
2. Prevent eye fatigue: avoid long-time and close work. In addition to adequate rest for the eyes, adequate sleep can reduce eye fatigue.
3. Good reading environment: including appropriate lighting, good paper, clear printing, appropriate font size and appropriate table and chair height.
4. Good reading habits: reduce fine close reading, keep the eye distance about 35 cm, and rest for five to ten minutes every 40 minutes to one hour. When you have a rest, you might as well go out and look at the distance to help relax your muscles.
5. Reduce the environment of myopia: look at the distance more. Especially now, we have a two-day weekend, and we can take advantage of holidays to go outing in the suburbs.
6. Pay attention to the principle of watching TV: place the TV slightly below the line of sight of the eyes; The distance between the eyes and the TV is five to seven times that of the diagonal of the TV picture; Do not turn off all indoor lights; TV screen image shall be clear; Take a five minute break every 30 minutes. You can use the advertising period to close your eyes and rest or get up and walk.