Abstract: high myopia may belong to autosomal recessive inheritance, and it has also been reported as autosomal dominant inheritance; Middle and low myopia is inherited by multiple factors, and the role of environmental factors is the main factor; A few of pathological myopia are X-linked recessive inheritance.
at present, there are more and more people with myopia, especially teenagers. Nearly 90% of teenagers and young people have different vision problems. So, what causes myopia?
I. love sugar
sugar in general sweets consumes a lot of vitamin B1 during metabolism in the human body, which will reduce vitamin B1 and affect eye vision. In addition, excessive intake of sugar can reduce calcium in people’s body, reduce eye elasticity and aggravate myopia.
2. Genetic factors
high myopia may belong to autosomal recessive inheritance, and it has also been reported as autosomal dominant inheritance; Middle and low myopia is inherited by multiple factors, and the role of environmental factors is the main factor; A few of pathological myopia are X-linked recessive inheritance.
three and parental smoking
study found that the parents of smokers were less smokers than both sides, their children showed relatively low myopia incidence rate (12.4%Vs25.4%) and relative hyperopia, but the long-term effects of nicotinic receptors on the development of human refractive system need to be further studied.
IV. overuse of eyes
myopia, in addition to heredity, most of them are improper use of eyes. Especially related to close work, such as early joining in close learning computer, piano and calligraphy; Insufficient lighting; Reading too close, too long, unclear or too small font and poor posture are all related to the occurrence and development of myopia.
v. less outdoor activities
some experts believe that the incidence of juvenile myopia is related to the amount of outdoor activities. The reason for the high incidence of myopia in East Asians may be related to the introversion of teenagers in the region and less time to participate in outdoor activities. Of course, it is also possible that the real reason is related to the intensity of working close.
VI. long term staring at electronic products
many children like to play with electronic products, while adolescence is a period of rapid development of myopia, and vision should stabilize after the age of 18. Parents and teachers should encourage their children to change the way they play games and do more outdoor activities. They should not indulge in game consoles, computers and TV too much.
after the occurrence of children’s myopia, parents do not allow them to wear glasses. They think that once they wear glasses, the degree will be deeper and deeper. As a result, the children will be delayed, the children’s myopia will gradually increase, and strabismus and amblyopia will occur. Precautions for
should educate teenagers to pay attention to eye hygiene, pay attention to the distance between eyes and books when reading, and keep correct posture. They should not read while lying down or walking; Pay attention to the sufficient lighting for reading, and the operation time should not be too long. After reading and writing for 45 minutes, you should rest for 10 minutes or look into the distance to make the ciliary muscles rest properly.
shall check their eyesight regularly. If they find that their eyesight decreases, they shall be checked and treated in time.