Nearsightedness refers to the fact that parallel light rays enter the eye and are refracted by the refraction of the eye and are imaged in front of the retina. The clinical manifestation of myopia is that it is difficult to see far and clear to see near. Myopia can be divided into low myopia (less than 300 degrees), moderate myopia (between 300 degrees and 600 degrees), and high myopia (more than 600 degrees). Among them, 200 degrees of myopia belongs to low myopia, low myopia does not belong to very serious myopia, its treatment plan can take the following kinds: first, the safest is optometry, can wear frame glasses and contact lenses. Secondly, laser surgery can be adopted. Excimer laser surgery treatment is a laser surgery option with a high safety factor at this stage. In addition to this, it is important to ensure two hours of outdoor activity every day to relax your eyes. Maintaining a good diet in your daily life will also help to stop the development of myopia.