Myopia can cause a lot of inconvenience in our daily life, and myopia can also cause a lot of harm to our eyes if not properly corrected. First of all, myopia can make us not see things clearly, which affects our daily work and study, and needs to be corrected with glasses. Secondly, certain professions in the military, college entrance exams and certain jobs have certain requirements for vision, and myopic people will be restricted and have an impact on their development. Furthermore, in highly myopic people, the eye axis is longer, and the retina will gradually become thinner, causing a series of fundus changes, such as choroidal atrophy, abnormal neovascularization, vitreous turbidity, posterior detachment, etc. Retinal detachment can easily occur, which can cause great damage to vision. Finally, high myopia has a certain genetic tendency, and the next generation of highly myopic patients is more likely to develop myopia. It is clear from the above that myopia has many hazards and requires our attention to strengthen myopia prevention and control for young people to reduce the incidence of myopia and slow its progression.