The eye can be compared to a camera, and a problem with the negative can seriously affect vision, and this is fundus disease. There are many kinds of fundus diseases, common fundus diseases include: 1, age-related macular degeneration: common macular degeneration caused by aging, is the main cause of blindness in people over 60 years old. 2, diabetic retinopathy: is the ocular manifestation of diabetic microangiopathy. The incidence increases as the duration of diabetes increases. 3, retinal vein obstruction: caused by high blood viscosity, vascular sclerosis, etc. It is common in the elderly, and more than 90% of patients are over 50 years old. 4.Pathological myopia: macular hemorrhage, neovascularization and even scar formation due to high myopia, which is a cause of blindness in young and middle-aged people. 5, central plasmacytoid chorioretinopathy: Mostly seen in young and middle-aged men, often with monocular onset, with a tendency of self-healing and recurrence. The etiology is unknown, mental stress, emotional excitement, infection, allergy, etc. can contribute to the development of this disease. 6, retinal degeneration, fissure, detachment: mostly caused by myopia, trauma and other reasons, the impact on vision varies depending on the location and extent of the lesion. 7.Hemangioma: It can occur in the retina or choroid, with different types of hemangiomas and different ages of onset.