Myopia glasses are divided into two categories of reasons, one is myopia, astigmatism need to wear glasses to correct vision; there is also a part of the therapeutic prescription, such as children have some strabismus, amblyopia, must be routinely prescribed glasses, this situation every day in addition to sleep at night you can take off the glasses, usually need to wear glasses. Myopia glasses need to be worn at all times except at night when they can be taken off to sleep and during physical education classes. If the glasses are worn and taken off, the eyes are in a stage of adjustment and non-adjustment, repeated switching will lead to non-stop movement of the eyes, the eyes will be very fatigued, and will increase the importance of fatigue and foreign body sensation and fatigue in the eyes, which leads to see things easily tired. So myopic patients with more than 250 degrees or more need to wear glasses all the time. Many people have some wrong concepts, thinking that the more you wear glasses, the more myopic you will be, or that your prescription will get deeper and deeper after wearing glasses, or that wearing glasses is particularly bad for your eyes. These are all one-sided concepts, and you should look at the issue of wearing glasses with a scientific concept.