First of all, in myopia correction and prevention and control: because of the hardness of RGP lenses, they can produce a certain compression effect on the cornea during transient vision, which can flatten the cornea, thus reducing the refractive power of the cornea and the astigmatism of the cornea, and thus controlling the progress of the total refractive power of the eye. A large number of clinical studies have shown that myopia in youth is mainly caused by the growth of the eye axis, and the transient effect of RGP glasses can compress the eye, thus controlling the growth of the eye axis, and thus achieving the purpose of controlling the development of myopia. Secondly, the application of refractive error in both eyes: some children’s myopia (or farsightedness) in both eyes is very different, wearing frame glasses will make both eyes imaging unequal, poor vision correction, over time, so that the child’s stereo vision function loss, the higher refractive error of the eye is the formation of serious amblyopia difficult to correct, some children even strabismus and so on, these children can wear RGP glasses in time to correct. Once again, hard oxygen permeable corneal contact lens imaging natural, high quality, can improve the overall visual function, especially for high myopia, high astigmatism, various causes of corneal irregular astigmatism patients corrected visual acuity significantly higher than other correction methods such as frame glasses; at the same time, there is a certain control of myopia development role.