1, beneficial to eye health RGP uses lens materials with better oxygen permeability, so that the oxygen in the atmosphere can reach the cornea through the lens to the maximum, so that the cornea “breathes” more smoothly. At the same time, due to the small diameter and high hardness of RGP, the mobility of the lens is greater than that of soft lenses, thus covering a smaller area of the cornea and allowing for a more adequate exchange of tears after transient vision, which also provides more space for the cornea to “breathe” to a certain extent. Adequate oxygen supply can greatly reduce hypoxic complications of contact lenses and ensure the health of the cornea. 2, conducive to improving visual clarity RGP has better optical performance, after wearing, RGP can form a good fit with the cornea, and get a clearer visual effect. Especially, RGP can make patients with astigmatism and refractive disparity get good correction. 3.It is good for alleviating myopia deepening In 1991, Grosvenor et al. of the University of Houston showed in a study on children aged 8 to 13 that the degree of myopia deepening in RGP wearers was significantly lighter than that of frame wearers. In addition, RGP has a slowing effect on early cone corneas and cone corneal tendencies.