Myopia treatment surgery is a procedure that uses medical silicone sponge, allograft sclera or broad fascia as a protective reinforcing material to strengthen and fuse the posterior pole sclera, which supports the posterior pole of the eye and prevents progressive expansion of the posterior pole and progressive lengthening of the eye axis, thus reducing the degree of myopia to a certain extent. At the same time, neovascularization is formed after surgery, which enhances blood circulation in the choroid and retina, stimulates the optic cells, activates bioelectricity, and improves visual acuity. This procedure is suitable for controlling the progressive lengthening of the eye axis in high myopia, and is especially important for adolescents with high myopia whose eye axis length exceeds 26 mm and whose myopic refraction deepens and develops more than 1.00D per year. The purpose is to control and reduce the development of myopia, to stabilize the myopia, to stop the occurrence and development of macular and posterior retinal degeneration, and to save the visual function of some patients with rapidly progressing high myopia. Indications 1.Adults with myopic refraction >800 degrees, eye axis >26mm, annual progression ≥100 degrees; 2.Adolescents with myopic refraction >400 degrees, eye axis >25mm, annual progression ≥100 degrees; 3.Pathological myopia with clear genetic predisposition; 4.Posterior scleral staphyloma; 5.High myopia with macular degeneration and fundus pathology. There are two types of myopia: simple myopia and pathological myopia, pathological myopia is also known as progressive high myopia and malignant myopia. Pathological myopia, also known as progressive high myopia and malignant myopia, is characterized by early onset of myopia, often before the age of 8, and increasing myopia as age increases. The final myopia is often above 12.00DS or even -30.00DS, the corrected visual acuity with lenses is often below 1.0, the length of the eye axis is greater than 26mm, and the fundus of the eye often shows high myopia complications. Such patients often have a genetic component. The prognosis may be poor for children who develop myopia before the age of 8 years, so aggressive surgical treatment is possible for this group of children. Early posterior scleral reinforcement can stop the progression of myopia and prevent the development of high myopia fundus complications. The hospital reminds us that for adults, as myopia continues to deepen, the effect of excimer laser surgery is not good, and new myopia will appear some time after surgery, so we should choose to perform posterior scleral reinforcement first to stop the development of myopia, and then do other refractive surgery after a period of stability after surgery. The mechanism and effect of scleral reinforcement for the treatment of developmental myopia have been confirmed by laboratory and clinical studies. The mechanism of action is mainly (1) mechanical strengthening of the posterior sclera, the implanted material will eventually gradually merge with the recipient sclera, stopping the progression of myopia by preventing the expansion of the eye and the lengthening of the eye axis. (2) Formation of a new vascular network in the sclera, improving the nutrition of the sclera, choroid and retina. ③Stimulating effect on the sclera locally, equivalent to biological tissue therapy. Principle of posterior scleral consolidation: The pathological basis of myopia development is the pathological dilatation of the eye and the pathological growth of the eye axis, which makes the myopia deepen. Posterior scleral consolidation is the application of human sclera and dura material implanted in the posterior part of the eye, and the implanted material adheres to the posterior wall of the eye, effectively limiting the expansion of the eye, preventing the lengthening of the eye, promoting the formation of new blood vessels in the sclera, and strengthening the blood circulation of the eye, thus achieving the purpose of controlling the development of myopia.