First of all, we must have a clear understanding: true myopia can be prevented and controlled development, but can not be eliminated by conventional methods myopia degree, want to remove glasses can only be excimer laser surgery after the age of 18. Students’ myopia develops quickly and is not well controlled for the following reasons: 1. Failure to control well the main cause of myopia in students: “look close”, due to a large number of homework, study tasks or playing computer games online, can lead to myopia control failure. 2, the main cause of myopia in students: faster growth and development caused by myopia development is difficult to control, you can do an annual ultrasound examination of the eye axis to understand the changes in the eye axis. 3. Wearing glasses is not standardized. Myopic defocus stimulus or form deprivation myopic stimulus, such as myopic lens prescription is too high, corrected visual acuity of 1.2 or more or glasses prescription is too low, or the lens is too flowery, etc. caused by blurred retinal image, similar to form deprivation. 4, the eyes look close for a long time, less activity, resulting in adjustment lag, thus causing the eye axis to become longer. Every 1mm longer will increase myopia by 300 degrees. Prevention and treatment points: 1. Early use of defocused distant lenses, virtual rest from looking at the near into looking at the far, so as to offset students’ myopia, the main cause of “looking at the near”. 2, the joint use of eye sensitivity telephoto lenses, to strengthen the eye focus sensitivity, to prevent the development of myopia caused by adjustment lag. 3. For stubborn people, it is best to use automatic far-reaching realm every day to strengthen the effect of myopia prevention.