The causes of retinal detachment can be roughly divided into the following three types: 1. Pore-derived retinal detachment, there is usually no hole in the retina, if there is a hole later, it is easy for fluid to seep into the retinal gap, causing retinal detachment. This hole formation causes, such as eye trauma, eye trauma put a hole in the retina, as well as high myopia, peripheral retinal dystrophy caused by degeneration, can also cause the formation of fissure. The retinal detachment caused by spontaneous fissure, which is the most common retinal detachment; 2, pulling retinal detachment, such as fundus disease, with fundus hemorrhage, such as the sugar network in the proliferative phase of change, long proliferative membrane, pulling the retina, pulling the retina up, dragging after the retinal detachment; 3, plasma retinal detachment, is a variety of causes of fluid under the retina, generally this detachment are This kind of detachment is generally shallow detachment, such as central plasma retinopathy, which used to be considered as edema, but now after the development of technology, it is considered as plasma retinal detachment.