In Western countries, macular degeneration is the main cause of blindness in people over 50 years old, and macular degeneration causes more blindness in the United States than the three common diseases of glaucoma, cataract and diabetic retinopathy combined. The prevalence of macular degeneration in China is also not low, with a prevalence of 6.04%-11.19% between the ages of 60 and 69. With the accelerated aging of the Chinese population, there is a clear upward trend of the disease, but the general public is not aware of and concerned enough about macular degeneration. Macular degeneration is recognized by the international ophthalmology community as one of the most difficult eye diseases to treat. There are not many effective treatment methods for macular degeneration. I. Macular degeneration Macular degeneration is usually the natural result of degeneration at advanced age. As age increases, the retinal tissue degenerates and thins, causing a decline in macular function. In 10% of patients with macular degeneration, the microvasculature responsible for supplying nutrients to the retina will leak and even form scars, and new abnormal blood vessels are also common. Sometimes, macular degeneration can also be caused by trauma, infection or inflammation, and there is also a certain genetic factor for this disease. Second, treatment Now the United States to take Avastin treatment macular degeneration, has been approved by the U.S. FDA, while China is currently only a few regions to carry out the use of this drug to treat macular degeneration. Third, the cause of macular degeneration is not completely clear, and the treatment method still needs to continue to be researched and developed, so patients can pay attention to the new treatment of the disease. At the same time, it is also reminded that elderly people should pay attention to eye health and establish the concept of regular eye examination. Fourth, classification 1, age-related macular degeneration, also known as age-related macular degeneration (AMD). This disease mostly occurs above 45 years old, and its prevalence increases with age, which is an important disease that causes blindness in middle-aged and elderly people. To date, no definitive and effective drug therapy has been found in modern medicine that can stop the progression of the disease. According to the severity of the clinical manifestations and the prognosis, there are two types: atrophic age-related macular degeneration and exudative age-related macular degeneration. 2, atrophic is also called dry or non-exudative. Both eyes often have simultaneous onset and development. The clinical history and manifestations of age-related hereditary macular degeneration (i.e. Haab’s disease) are the same, but it is not easy to determine whether they are the same disease because they both occur in the elderly and it is difficult to investigate the family lineage. 3.Exudative, also known as wet, i.e. age-related disciform macular degeneration. This type is characterized by active neovascularization under the pigment epithelium, which causes a series of exudative, hemorrhagic and scarring changes.