In my clinical practice work, I often encounter patients whose eye diseases have turned into complex vitreoretinal diseases because they were not treated promptly and effectively in their early stages. The common ones are more severe vitreous hemorrhage, retinal detachment, diabetic retinopathy, retinal vein obstruction, etc. These diseases often result in severe vision loss and even blindness. Treatment of such diseases often requires vitrectomy surgery. Vitrectomy is complex, expensive and risky, but it can sometimes treat some complex vitreoretinal diseases and save some of the patient’s vision, making it a handy option for ophthalmologists. Vitrectomy is performed by making three puncture holes in appropriate locations in the eye for the placement of an irrigation tube, an illuminating fiber, and a vitreous cutting head, removing the cloudy vitreous under an operating microscope, peeling and removing the proliferating membrane that causes retinal traction, allowing the detached retina to be reset, performing laser photocoagulation of the retinal rupture and vascular lesion areas that are present, and finally, filling the eye with gas, silicone oil, or balanced Finally, the eye is filled with gas, silicone oil or saline. The eye is then filled with gas, silicone oil or balanced saline. After surgery, the eye is sometimes kept in a prone position, depending on the condition. Eye conditions requiring vitrectomy include: vitreous hemorrhage and/or retinal detachment due to diabetic retinopathy, retinal vein obstruction, and ocular trauma; proliferating severe retinal detachment; retinal macular rupture; endophthalmitis; intraocular foreign bodies; and severe vitreous opacities.