Generally higher than 600 degrees is considered high myopia. If the corneal thickness allows, excimer laser keratomileusis can be chosen. If the corneal thickness is not enough, intraocular lens implantation (ICL) surgery can be considered to achieve vision restoration. Is posterior scleral a mandatory procedure for patients with high myopia? Posterior scleral reinforcement is an extraocular procedure in which a reinforcing material is cut into various desired shapes, separated from the extraocular muscles through an incision in the bulbar conjunctiva, and placed all the way to the outer surface of the eye where the eye is weakest, usually fixed at the posterior pole of the eye and in the area with gravidity. This procedure is suitable for controlling progressive lengthening of the eye axis in high myopia, especially in adolescents with high myopia who have an eye axis length of more than 26 mm and a myopic refractive error progression of more than 1.00D per year. Although some doctors believe that the efficacy of posterior scleral addition is not definitive, posterior scleral reinforcement is more widely indicated because of its safety, few side effects and complications. In a broad sense, posterior scleral reinforcement can be performed on anyone with 800 degrees or more of myopia.