The frequency of replacing myopia glasses depends on the rate of progression of myopia. It is recommended that adolescents have their glasses examined and fitted every six months to a year; adults should have their glasses replaced every 2-3 years, and if the lenses are worn out, they should be replaced at any time. Myopia patients can correct their vision by wearing glasses and visiting the hospital regularly for optometry according to the rate of progression of myopia. Because teenagers use their eyes too much and most patients do not pay attention to eye hygiene, myopia progresses at a faster rate. It is recommended to visit the hospital every six months or a year for an optometry examination and to wear appropriate myopia glasses. Adults have mature eyes and the progression of myopia is slower, so it is recommended to go to the hospital every 2-3 years for an optometry examination, or to go to the hospital for an optometry prescription when you feel that your glasses are not suitable. In addition, pay attention to eye hygiene and avoid overuse of the eyes, which can slow down the progression of myopia.