The best corrected visual acuity for glasses should be around 1.0 in one eye. Generally speaking, if a child is fitted with eyeglasses, try to ensure that it is above 1.0 in one eye, which will make the child see things more clearly. Children have a better ability to adapt, which is more in line with the normal physiological state, and will slow down the growth of the prescription to a certain extent. Adults with glasses, try to ensure that the vision in both eyes is about 1.0. If you can’t ensure that the visual acuity in both eyes is 1.0, it is necessary to lower the prescription to a comfortable level. Since the prescription of adults is relatively stable, lowering the prescription appropriately will not aggravate the progression of myopia. Adults, the main principle of comfort, vision clarity is supplemented by the principle of glasses.