Posterior scleral reinforcement is a treatment scope for patients with rapid progression of high myopia, macular fissure and macular cleft caused by high myopia, etc. The damage of high myopia to the eye and vision is caused by the continuous growth of the eye in high myopia patients, the sclera at the posterior macula protrudes backward to form a grape swelling, and the corresponding retinal tissue gradually thins and atrophies, producing fissures or splits, and finally forming retinal detachment. Therefore, its complications are extremely harmful to vision and can easily cause blindness. The principle of posterior scleral reinforcement surgery is to strengthen the posterior sclera by applying a biomaterial to the protruding staphyloma at the back of the eye of highly myopic patients, so called “reinforcement”, thus strengthening the sclera at the macula, stabilizing the length of the eye axis, preventing the development of high myopia, and protecting the retinal choroid (macula) at the posterior pole.