Retinal detachment should be called retinal detachment, internal and external surgery have their own advantages, external surgery does not open the eyeball, while internal surgery has more indications to treat the type of retinal detachment that cannot be treated by external surgery. External approach surgery does not go inside the eyeball and has less impact on the eye structure, but it is prone to problems such as postoperative cycloplegic pain and deepening of myopia. Internal approach surgery is a surgical maneuver performed inside the eyeball to remove the intraocular lesion and reset the retina through vitrectomy technique. The indications for internal or external surgery for retinal detachment are different. External surgery is suitable for new, mild retinal detachment with retinal tears located in the peripheral part of the eye, while internal surgery is suitable for old retinal detachment with intraocular hemorrhage and retinal detachment with retinal tears near the center. The exact choice of surgery needs to be determined by the doctor based on the patient’s specific condition. If retinal detachment is diagnosed, please follow the doctor’s instructions for treatment.