Hello, there are two causes of myopia: congenital and acquired. Congenital factors are related to heredity, and acquired factors are related to society, environment and eye habits. From the acquired factors, we should master the following four elements to prevent myopia: social prevention According to the survey data, mild myopia mostly occurs in school-age children, and the incidence of myopia is getting higher and higher with the improvement of education level. In today's society, schools and parents expect too much from their children and update their knowledge quickly, which adds a lot of unreasonable extra burdens to students and leads to an increase in the probability of myopia. Let children get relative relief and relaxation in the process of eyeball development. The school's prevention is first of all the school's environmental facilities, the classroom should be spacious and bright, the lighting distribution should be scientific and reasonable, the height of tables and chairs should be appropriate, the blackboard should be large and the handwriting should be clear. Secondly, the school's eye education, regular eye examination, combined with students' respective eyesight, change seats regularly, and rotate left, middle and right; Finally, reduce the amount of homework and reduce the burden on students' eyes.

Personal experience is for reference only. Please consult a doctor according to the specific condition!