Abstract: the cause of myopia is still not very clear. It is generally accepted that myopia is caused by many factors. In recent years, many evidences have shown that environmental and genetic factors jointly lead to the occurrence of myopia.
parents want their children to be healthy, especially now there are many children with myopia. Many parents are worried about what to do with their children’s poor eyesight since childhood, especially some parents with high myopia. Once their children set up small glasses when they are young, their mother will fall into heavy self blame, I think it must be caused by my own or another half’s myopia gene.
so, is myopia inherited or not?
research shows that myopia exists in almost all people in the world, but unfortunately, the annoying physiological defect of myopia seems to prefer Chinese people, followed by Jews, Japanese and Arabs. Moreover, the incidence of myopia in women is twice that of men, and myopia in blacks is relatively rare. Look around. It seems to be true. The causes of
myopia are still not very clear. It is generally accepted that myopia is caused by many factors. In recent years, many evidences have shown that environmental and genetic factors jointly lead to the occurrence of myopia.
genetic factors. Scientists’ myopia research on twins shows that myopia is indeed determined by genetic factors to a certain extent. It is found that people whose parents have myopia are 10 times more likely to have myopia than those whose parents do not have myopia.
but the genetic mechanism of myopia is very complex. Now it has been confirmed that polygenes and different single gene genetic models are involved in the formation of high myopia, which ultimately determines whether myopia occurs and its severity.
high myopia has a relatively simple genetic model than low myopia to some extent. At present, there are five known gene loci related to high myopia: myp1, MYP2, MYP3, myp4 and myp5. There is only one gene locus related to mild to moderate myopia, myp6.
environmental factors. Excessive eye use, too close reading distance and wrong reading and writing habits will all lead to vision loss. The reason is that long-time reading or close operation of precision instruments make the ciliary muscles in a spasm state, so they can’t relax to their original position. The survey shows that among the students in key schools in Beijing, the myopia rate exceeds 90%; In a key middle school in Liangcheng County, Inner Mongolia, the myopia rate is less than 10%. The strong contrast between urban and rural areas of
shows that in addition to learning factors, long-time use of computers or watching TV and the food structure with excessive nutrition may also be a non negligible factor leading to myopia. Vitamin E has been proved to be an important component in improving vision.
the interaction of environment and gene. The conclusion is that genes and environment together cause myopia. Representative studies have shown that there is a positive correlation between myopia and close work, learning and reading. In other words, environmental factors are very important. But in different individuals in the same environment, some are short-sighted and some are not short-sighted. This is the result of gene action. We can’t change the inheritance of
for the time being, but we can cultivate children’s good eye habits from an early age, reduce the influence of environmental factors, and work together to make their children’s eyes bright ~.