Retinal detachment is mainly divided into three categories according to the etiology: pore origin, traction and exudation, which are usually treated surgically. 1.Surgical closure of the fissure: Pore-derived retinal detachment refers to the presence of a fissure in the retina, which leads to retinal detachment. The fissure is mostly closed surgically, and the fissure can be closed by laser photocoagulation, condensation or electrocoagulation under a microscope. 2.Gas injection into the vitreous cavity: For patients with a fissure above and not serious detachment, gas injection into the vitreous cavity can be used to inject sterilized air or long-acting gas, which can be used to press the detached retina in a certain position to reset the retina, and then perform fundus laser to form retina-choroidal adhesions around the fissure, so that the retina is not easily detached again. 3.Surgical release of adhesions or traction: retinal detachment is mostly due to fiber growth or adhesions at the intersection of vitreous and retina, pulling the retina to cause detachment, and surgery mainly uses external pressure relief traction or vitreous surgery to release the traction or adhesions. 4.Vitrectomy: For severe vitreous diseases or retinal detachment caused by other reasons, vitrectomy is needed. After the vitreous is removed, vitreous substitutes such as long-lasting gas or silicone oil will be injected into the eye to top-press the detached retina and reset it. In summary, the main surgical procedure for retinal detachment is to use laser, condensation, electrocoagulation to close the fissure, combined with extra-scleral pressure or vitrectomy to reset the retina.