Some people wear unsuitable glasses, causing their prescription to deepen, so many myopic patients ask the same question: whether myopic glasses are deeper the more they wear them. In fact, myopia glasses not only do not deepen the degree, but also can achieve the purpose of correcting vision and treating eye diseases. 1, myopia glasses can correct vision. Myopia because the distant light can not be focused on the retina, resulting in unclear vision, and after wearing myopia lenses, you can get a clear image of the object, so that vision can be corrected. 2, myopic lenses can reduce visual fatigue. Myopia and do not wear glasses, will inevitably lead to glasses fatigue, the result can only be to promote the deepening of the degree. Normal wear glasses, visual fatigue phenomenon will be greatly reduced. 3, myopic lenses can prevent and control the external oblique. When myopic eyes look close, the eye’s regulation is weakened, a long time the role of the external rectus muscle over the internal rectus muscle, will cause the eye position outward slant. Of course, myopia with exotropia can still be corrected by myopia lenses. 4, myopic lenses can prevent and control eyeball protrusion. As the eyeball is still in the developmental stage, youngsters are very easy to develop axial myopia. Especially for highly myopic eyes, the anterior and posterior diameters of the eyeballs are significantly prolonged, and the appearance is manifested as eyeball protrusion. If myopia is corrected by normal wearing of lenses at the beginning, this situation will be reduced, and even can not occur. 5, myopic lenses can prevent and control amblyopia. High myopia without timely lens, often cause refractive error amblyopia, as long as the appropriate glasses, after a long time of treatment, most of the visual acuity will gradually improve. 6, myopic lenses for high myopia caused by comorbidities. Such as retinal detachment, vitreous clouding, cataract, glaucoma, nystagmus, etc., have certain preventive effect. Therefore, myopic patients should choose regular hospitals for standardized optometry, as long as the glasses are appropriate, wear them from time to time, and pay attention to daily visual hygiene, myopia can be stabilized or even reduced.