The retina is the innermost layer of the eye wall, which can be subdivided according to its function into an outer layer of pigment epithelium and an inner layer of photoreceptor cells. The retina is the sensory part of vision formation and has a complex, delicate and fragile tissue structure with a vigorous metabolism. If we compare the eye to a camera, the retina is the equivalent of the photographic film in a camera. Under normal conditions, there are potential lacunae between the inner and outer layers of the retina. When the inner layer of photoreceptor cells ruptures for various reasons to form a fissure, water from the adjacent vitreous enters the fissure and separates the outer layer of pigment epithelium from the inner layer of photoreceptor cells, resulting in retinal detachment of pore origin (retinal detachment for short). When retinal detachment occurs, fluid accumulates under the retina, which weakens the light-sensitive function of the retina, resulting in vision loss. Retinal detachment is a serious eye disease, if left untreated, it will cause a decline in visual function and risk of blindness, and some patients will also suffer from eye atrophy.