Retinal detachment is the separation of the neuroepithelial layer of the retina from the pigment epithelial layer. There are ten layers in the retina, of which the pigment epithelial layer closest to the wall of the eye is tightly connected to the choroid, while it is loosely connected to the neuroepithelial layer, so the separation often occurs between these two layers. The retina is the structure that converts light signals into neuroelectrical signals, and when a detachment occurs, damage occurs and vision will be catastrophically damaged. There are three types of retinal detachment: foraminogenic retinal detachment, retinal detachment by retraction, and retinal detachment by exudation. Pore-derived retinal detachment is common in patients with high myopia, and the higher the degree and age, the higher the risk of developing it, especially if the eye is shocked or inflamed. As the eye axis is too long in highly myopic patients, the inner wall of the eye is too large and the retina is passively dilated, which is prone to lattice-like degeneration. The higher the degree of myopia the thinner the retina is, and the larger the retinal lattice is, which makes it easy for vitreous fluid to enter the subretina and lead to retinal detachment. As we age, the retina also becomes thinner, accelerating the above process. When the eye is shocked, it also drives the retina to develop gaps and detachment. Retinal detachment is caused by pathological vitreous opacities that appear as striated proliferations, which then pull on the retina and cause fissures, followed by the flow of vitreous fluid into the subretina and retinal detachment. This condition is commonly seen in diabetic retinopathy, vitreous hemorrhage, uveitis, etc. Exudative retinal detachment is formed by the accumulation of inflammatory exudate under the retina and is commonly seen in patients with primary diseases such as gestational hypertension syndrome and severe uveitis. With the exception of exudative retinal detachment, retinal detachment can be preceded by vitreous opacities, or what patients perceive as flying mosquitoes. When retinal detachment first appears, patients can see a limited shadow, if not treated in time, the shadow can expand to the entire field of vision within a few days, when the retina has been severely detached. Retinal detachment should be treated early, because the retina will gradually lose its original function after detachment, and if surgery is performed several days after detachment, even if the surgery is successful, the effect of vision recovery is not ideal. For foramen ovale retinal detachment, if retinal fissures are found before the detachment, laser retinal photocoagulation is feasible to intercept the fissures to avoid the occurrence of retinal detachment or reduce the number of surgeries. For exudative retinal detachment after the primary disease has improved, the subretinal fluid can be absorbed and surgery is not required, but bed rest is required as much as possible when retinal detachment occurs to avoid aggravating the scope of detachment and the need for surgical treatment.