There are three main ways to treat macular edema: the first one is laser treatment or photothermodynamic therapy, mainly by playing retinal laser in the periphery, or photodynamic therapy in the macular area according to the location of the leakage point, the laser needs 3-4 times to finish, and it is about RMB 2,000. Photodynamic photodynamic therapy is mainly PDT treatment, which requires between 10,000-15,000 RMB. The second is vitreous cavity injection of anti-VEGF type drugs, which is a drug to reduce edema and inhibit neovascularization, and costs around $8,000-9,000. The third is vitrectomy, which removes the proliferating membrane as well as the bleeding and promotes the absorption of macular edema, and costs between $10,000-15,000.