Myopia is a condition in which parallel light is refracted by the refractive system of the eye and focused in front of the retina, failing to form a clear image on the retina and resulting in reduced vision. The vast majority of myopia is caused by the elongation of the eye, which means that the growth of the anterior and posterior diameters of the eye is the anatomical basis of myopia. A small percentage of myopia is caused by over-regulation, which is often referred to as pseudomyopia, due to strong regulation in adolescents. The root cause of regulatory myopia is ciliary muscle spasm, which can be relieved by relaxing the ciliary muscle. The percentage of patients with this condition is not really high, as statistics show that only 8% of myopia is purely pseudomyopia in China. The vast majority of myopia in adolescents is due to true myopia caused by the elongation of the eye. Since true myopia is caused by the elongation of the eye axis, this change cannot be reversed through medication or medical treatment. Therefore, there is no cure for myopia. Wearing glasses and laser surgery are the most basic methods to correct myopia. The treatment of myopia is a major problem in the medical field, and there are various ways to treat myopia on the market. Myopia prevention and treatment experts have reviewed more than 50 types of myopia prevention products, some of which can relieve visual fatigue and temporarily improve vision to relieve pseudomyopia, but none of the items reviewed had a real therapeutic effect on true myopia. Since there is no very effective way to prevent and treat myopia, the number of people wearing myopic glasses is increasing, and students, parents and society are eager for a way to control the development of myopia. To meet this need, a large number of myopia prevention and treatment eye drugs, oral medications, physical therapies and various physical therapies such as ultrasound and magnetic therapy have proliferated in the pharmaceutical market. Since these myopia prevention and treatment drugs or methods lack scientific arguments, the therapeutic effects are not long-lasting and thus are eliminated one by one. Since myopia cannot be treated, parents are expected not to blindly believe in various methods of myopia treatment in the society, treat children’s myopia rationally and take them to a specialized eye institute for examination as early as possible once they find that their children have vision problems. Medical optometry, scientific prescription, control the development of myopia. The safest and most effective way for teenagers is to wear glasses scientifically and reasonably, after myopia, if you do not wear glasses will have two consequences: one, is easy to cause vision fatigue, affecting learning and work; two, is to see things when the two eyes often squint into a slit. In the long run, the upper and lower eyelids will compress the eyeballs causing a shift in astigmatism, and the front and back eye axis will be elongated, making the myopia increasing. The benefits of wearing glasses: First, can correct vision: after wearing glasses, you can get a clear image, so that vision can be corrected. Second, can prevent the protrusion of the eye: if not wearing glasses, myopia will further develop, the front and rear diameter of the eye will be prolonged, manifested as the protrusion of the eye, if the normal wearing glasses correction, this situation will be reduced, or even can not occur. Third, to prevent complications: for high myopia caused by the combination of diseases, such as retinal detachment, vitreous turbidity, cataract, glaucoma, nystagmus, etc., have a certain preventive effect. Fourth, can reduce visual fatigue: after myopia, if you do not wear glasses, blurred vision, will increase the burden on the eyes, resulting in visual fatigue. After wearing glasses normally, the phenomenon of visual fatigue will be greatly reduced. Five, can prevent exotropia: after the near vision, the eyes need to adjust to reduce, then the collection of both eyes correspondingly reduced, will cause the eye position exotropia. The actual fact is that you can find a lot of benefits of wearing nearsighted eyes, not people imagine that nearsighted glasses will wear deeper and deeper, and even cause eye deformation.