Abstract: the human eye is like an accurate camera, and the retina is like the negative of the camera. After birth, the eyeball is still developing in order to achieve the balance between eyeball length and refractive state, so that the colorful world can be clearly imaged on the retina.
eyes are the windows of the soul, but now more and more people need to wear glasses because of myopia and begin to communicate through lenses. It is difficult to go back to the real “face-to-face” in the past. As we all feel, myopia has become a global health and health issue with a rapidly growing prevalence. According to the data of
, the prevalence of myopia worldwide increased from 22.9% in 2000 to 28.3% in 2010. It is estimated that 49.8% of the world’s population, that is, 4.758 billion people, will suffer from myopia by 2050. China is a country with a high incidence of myopia, and the prevalence of myopia is even more amazing. 64.9% of adolescents aged 7 ~ 18 are myopic, while 78.5% ~ 95.5% of college students suffer from myopia. In addition, the latest evidence shows that the occurrence of myopia is characterized by gradual aging. About 2.5% of children aged 3 ~ 6 are myopic.
who are prone to myopia?
parents with myopia often have such concerns: will myopia be passed on to their children? This problem has been confirmed by scientific research, that is, the occurrence of myopia is affected by genetic factors. Parents suffering from myopia is indeed a risk factor for their children’s myopia. In other words, parents with myopia are more likely to have myopia than their children without myopia, and both parents are more likely to have myopia than one of their parents.
however, there is no direct evidence that the occurrence of myopia is determined by which gene. Compared with genetic factors, scientists believe that environmental factors play a greater role in the occurrence of myopia.
for example: the application of mobile phones and computers in modern life, heavy schoolwork burden of students, etc. the increase of these close work is the key factor for the occurrence of myopia; The reduction of outdoor activity time reduces the normal visual stimulation received by the eyes, which is also an important factor in the occurrence of myopia. Therefore, with the increase of education, the prevalence of myopia increases. In addition, the distribution of myopia also has distinct regional characteristics. For example, the prevalence of myopia in urban areas is higher than that in rural areas, and that in developed and developing countries is higher than that in backward countries. Therefore, myopia is considered to be one of the diseases of modern civilization. Since myopia is mainly caused by environmental factors, myopia can be prevented and controlled. Maintaining good eye habits, paying attention to intermittent relaxation training and increasing outdoor activity time all have a certain inhibitory effect on the occurrence and development of myopia. The latest research of
shows that adequate outdoor activities, with special emphasis on outdoor exposure time and illumination, can effectively prevent the formation of children’s myopia. Therefore, we advocate outdoor sports under the “sun”. What are the main changes in the eyes of
people’s eyes are like an accurate camera, and the retina is like the negative of the camera. After birth, the eyeball is still developing in order to achieve the balance between eyeball length and refractive state, so that the colorful world can be clearly imaged on the retina.
if the elongation of the eye axis is too long relative to the refractive power of the eye during the growth and development of the eye, and the light is focused on the retina, resulting in blurred vision, it will become myopia. It can be seen that when myopia occurs, the main change of the eye is the elongation of the eye axis.
what are the hazards of myopia?
most myopia patients in China choose to wear frame glasses to correct their vision. Wearing glasses is inconvenient and has a certain impact on their appearance. In addition, corneal contact lens and refractive surgery also provide more correction options. No matter what plan, lens care and various treatment costs need to be considered.
myopia is related to the occurrence of some eye diseases, such as retinal detachment, choroidal neovascularization, macular degeneration, cataract and glaucoma. It should be emphasized that these eye diseases can occur not only in high myopia, but in all degrees of myopia. However, the risk increases with the deepening of myopia. Once permanent vision loss is caused, it is very harmful, which will not only affect and damage the visual ability and visual function of individuals and families, It also brings a huge social and economic burden on global health care.
therefore, myopia is not only a medical problem, but also a social problem. The prevention and control of
myopia has become a major event related to people’s health and public life. On the one hand, we need to have a deeper understanding of the occurrence and development of myopia. On the other hand,
need the common attention and efforts of individuals, families and society, combined with the development of modern medicine and modern science and technology, to provide the most effective preventive measures and the safest correction methods and means, so as to benefit more myopia patients and benefit all mankind.