Vitrectomy is a high technology that has developed rapidly in ophthalmology in recent decades, and its emergence is a breakthrough in ophthalmology treatment as it has solved many incurable diseases in ophthalmology in the past. Vitrectomy is a procedure to remove the vitreous humor, which is 99% water, and accounts for 4/5 of the eye’s volume. Surgery to remove the vitreous humor will not adversely affect your eyes, and you will not experience any abnormal sensations. Vitrectomy is an important part of many fundoplication surgeries. By removing the vitreous body, bleeding can be removed, pathogenic microorganisms can be eliminated, intraocular foreign bodies can be removed, and conditions can be created for retinal reset. Depending on the condition, different fillers such as BSS, inert gas, and silicone oil need to be injected into the vitreous cavity after surgery. Patients injected with gas and silicone oil all need to maintain a special position for a certain period of time after surgery to facilitate recovery. This time varies depending on the filler and your bedside doctor will advise you on how long to remain in this position depending on your condition. Patients injected with silicone oil tend to require a second surgery to remove it, and the BSS and inert gases (ranging from about 3-6 weeks) are gradually replaced by aqueous produced in the eye. The true visual function is not reflected for a period of time after the vitrectomy mostly due to the abnormal refractive state. Vitreous surgery requires active cooperation of the patient before and after surgery, including: emotional stability and comfort. Regular and balanced diet, good living habits, strict postoperative position, follow-up appointments and medication as prescribed by the doctor. These are all necessary factors to improve the success rate of surgery.