”The old eye exercises have been replayed every day for 36 years on campuses across the country, and the familiar sound of “protect your eyesight for the revolution and prevent myopia. However, the number of people who “protect their eyesight for the revolution” is decreasing. In recent years, there has been a gradual increase in the number of primary and secondary school students wearing glasses, and the age of onset of myopia is also showing a trend of lower age, with more and more tiny eyes wearing big glasses on campus. True myopia, which is caused by a variety of factors that lead to an overly long anterior-posterior axis of the eye. Much evidence suggests that a combination of environmental and genetic factors are involved in the development of myopia. In addition to genetic factors, the main triggers of myopia include poor eye environment, incorrect eye habits and failure to diagnose and treat pseudomyopia in a timely manner. Modern changes in living environment and lifestyle are the main causes of myopia at a younger age. Changes in the living environment include: 1. The rise of high-rise buildings has blocked the original wide field of vision, reducing the opportunities for students to see from a distance and blocking the light in classrooms, making many classrooms less spacious and bright. 2. As electronic products with frequently flashing screens such as computers, TVs and cell phones change day by day, more and more children of younger ages are using these electronic products for learning and entertainment, increasing the opportunities and time for close gazing. 3, the change in the dietary environment, coupled with the busy work of parents, giving children the freedom to choose food, many elementary school students in the developmental period prefer to choose Western fast food, or some fine food, and the lack of coarse grains and vegetables and fruits intake, monotonous nutrients, easy to lack of trace elements, some studies show that the lack of chromium will make the lens become convex, increasing the degree of myopia, while the lack of vitamin B and calcium will make the wall of the eye lose its normal elasticity. Lifestyle changes include: 1. Nowadays, primary and secondary school students need to master more and more difficult knowledge, learning pressure is increasing, in school, the 10 minutes between classes and some outdoor activities that should be outdoors to rest their eyes are taken up by cultural classes. Outside of school, heavy homework and various extracurricular classes take up most of the students’ after-school time, making them spend more time reading than before. And outdoor sports are obviously reduced. 2. Under the fierce competition, teachers and parents pay more attention to children’s academic performance and neglect their physical and mental health. Parents fail to emphasize the need for children to develop good reading habits, for example, they are required to read for no more than one hour continuously or even for a shorter period of time before looking into the distance to rest their eyes. 3. The modern fast-paced lifestyle makes parents spend less time with their children, and many children are not detected during the period of pseudomyopia. The best time for treatment is missed. 4. Due to heavy study load or lack of parental supervision, more and more children sleep less than 8 hours, and lack of sleep during the developmental period can easily cause plant nerve dysfunction, which may also cause abnormal contraction of the ciliary muscle in the eye and become one of the pathological bases of myopia. So how can myopia be prevented? On the one hand, students should be provided with a good learning environment, with bright and moderate lighting and appropriate seat height. On the other hand, we should also pay attention to children’s health education and cultivate good eye habits from childhood. 1, close reading for an hour, should take a 10-minute break, look into the distance, relax the eye muscles. 2. Maintain a good reading posture, avoid lying down to read or reading in sports, and read books at a distance of 30cm between the eyes and the book. 3.Supervise students to do eye exercises every day, pay attention to wash clean hands when doing exercises, and keep eye hygiene. In addition, parents should pay attention to a reasonable diet for their children, and proper arrangements for study and rest time. Encourage children to participate in outdoor activities and encourage them to learn from life rather than just by watching TV, computers or textbooks. Finally, don’t neglect your child’s health in the pursuit of achievement. Regular medical checkups should be conducted to detect pseudomyopia early, and timely treatment may prevent or delay the onset of myopia or reduce the degree of myopia. For children with existing myopia, regular physical examinations should be conducted to determine the appropriate number of glasses to prevent further progression, especially for children with high myopia, and regular eye examinations should be conducted to avoid complications such as retinal fissures. Children’s eyesight needs the joint care of schools and parents, so let’s work together to stay away from myopia and give children a clear world.