What is myopia? Myopia is when parallel light rays are focused in front of the retina after passing through the refractive system of the eye in a relaxed state of adjustment. Myopia is influenced by a combination of genetic and environmental factors. Myopia is divided into three categories based on the degree of myopia: less than -3.00 for mild myopia, -3.00D -6.00D for moderate myopia, and greater than -6.00D for high myopia. Because myopia does not require adjustment for near vision, the pooling function is correspondingly weakened, which can easily cause exotropia or exotropia. If not corrected and treated in time during the mild myopia stage, it will develop into moderate myopia or high myopia. And when it develops into high myopia, it can be complicated by different degrees of fundus lesions. Compared with normal people, the risk of retinal detachment, avulsion, fissure, macular hemorrhage and neovascularization is much greater, often due to longer anterior and posterior diameter of the eye, more prominent eye, dilated posterior pole of the eye, and formation of posterior scleral grapevine. The main causes of myopia in adolescents: The formation of myopia in adolescents is mainly due to prolonged close work, poor eye posture, reading on a table, lying in bed or in an unstable carriage; too much light and too little light make the ciliary muscle of the eye in spasm for a long time, resulting in dizziness, eye swelling, vision loss and other symptoms of visual fatigue. How to prevent pseudomyopia? 1, to develop the correct posture of writing, reading, books and eyes should be maintained a city feet. Desks and chairs should be suitable for the size of students. 2, continuous close eye time should not be too long, after 40-50 minutes to rest 3-5 minutes. 3, reading and writing conditions when the lighting should be standard and uniform, do not read in the state of shock, shaking, TV screen brightness and tone should be moderate, when the image is unclear, should immediately shift the line of sight. 4. Do eye exercises every day to eliminate eye muscle fatigue. Eat a reasonable diet and eat less sweets. 5.Regular vision check. It is best to check your eyesight every six months, and if you already have myopia symptoms, go to the hospital for treatment in a timely manner. Myths about pseudomyopia: Viewpoint 1: Myopia with a small degree is “pseudomyopia”. Answer: “Pseudomyopia” is a refractive state of orthopia or mild hyperopia through ciliary muscle paralytic optometry. Therefore, the “refractive error”, even if it is 25 degrees, should be “true myopia” through the regular degree of optometry. Opinion 2: “Mild myopia” does not require treatment. Answer: If you do not treat “mild myopia” correctly, it is likely to develop into “moderate myopia” or “high myopia”. There are two aspects to the treatment plan: 1. eliminate the causes, i.e., reduce the prolonged near eye use; 2. control the development of myopia through treatment and prevent the occurrence of high myopia. Treatment for myopia in adolescents: The treatment options for myopia vary depending on the degree of myopia. According to the idea of Chinese medicine, combined with the characteristics of youth myopia, Chinese medicine is used to dredge the meridians, harmonize the qi and blood, so that the eye regulating ability is enhanced and the symptoms of visual fatigue are relieved, in order to treat the effect of improving vision and controlling the development of myopia. At present, the main methods include acupuncture, ear point pressure bean, acupuncture point application, Chinese medicine stick moxibustion therapy and other methods. Consult a specialist for specific treatments.