The principle of myopia Children with myopia show reduced distance vision when looking at distant objects, but for near targets, the refractive system of the eye can still make a clear image on the retina, so near vision is normal. As a result of seeing distant objects, myopic children often like to squint to see things, which can make the light in the eye concentrated, and also can properly change the state of the eye, so that the retinal macula image becomes clearer. Environmental factors There is no doubt that both high myopia and general myopia are influenced by environmental factors. Especially in the early years, when the eyes of young children are not yet mature, environmental factors become the main cause of myopia if they are often in an environment with poor eye hygiene. When adolescents do not pay attention to eye hygiene when reading, such as lighting is not bright enough, eye posture is not correct, reading and writing distance is too close, eye time is too long, etc., so that the ciliary muscle is in a state of high tension for a long time, continuous contraction, adjustment spasm, vision fatigue, further development of the eye front and rear diameter becomes longer, the formation of myopia. Therefore, it is very important to cultivate good eye hygiene habits, children should not spend more than 30 minutes at close range, and should not spend more than 20 minutes each time operating various electronic video products, and the cumulative time is not recommended to exceed 1 hour per day. The distance between the eyes and the fluorescent screen of various electronic products is generally 5-7 times the diagonal of the screen surface, with the screen surface slightly lower than the eye height. School myopia However, it is more worthwhile to discuss school myopia. The vast majority of school myopia is mild, not all of it is true myopia, and a significant proportion is pseudophakic. Studies have shown that myopia rates among students increase gradually with the school year, and the number of myopia degrees increases gradually with the school year, being predominantly mild myopia, followed by moderate myopia. These conditions suggest that the occurrence of school myopia is mainly the result of acquired factors. The onset of school myopia in most individuals may initially go through a mediated spastic phase before evolving into true myopia. Myopia in school-aged children is highly valued by parents, and many of them accompany their children to hospitals specialized in vision care, which can effectively protect and even improve vision through regular, standardized acupressure with local ultrasonic physical therapy. Massage is the physical stimulation with the help of manipulation, causing changes in the biophysical and biochemical aspects of the body, this change through the nerve reflexes and body fluid regulation to adjust the function of the visual organs, so that the meridians are unblocked, the balance of yin and Yang, Ying and Wei harmonize, Qi and blood flow as normal, so as to achieve the purpose of treatment. Practice has proved that massage treatment for myopia in children is not only fast and effective, this treatment is a combination of meridian and acupuncture points, according to the interrelated afferent nerves, in the corresponding parts of the body surface through the press, knead, pinch, massage and other techniques to regulate the visual nerve pathway to restore vision. Acupressure combined with ultrasonic physiotherapy compared to the previous acupuncture methods, painless and non-invasive, not easy to relapse, massage techniques are simple to learn, parents can also learn to do at home, can effectively protect students’ daily vision.