If the intraocular pressure is normal after retinal detachment surgery, the silicone oil injected inside the eye does not need to be removed earlier, usually at 3 to 6 months after surgery. Silicone oil is usually injected inside the eye during retinal detachment surgery to utilize the surface tension of the silicone oil to press against the retina to promote retinal restoration. However, the silicone oil cannot be kept inside the eye for a long time, otherwise complications such as silicone oil emulsification may occur. If the patient’s intraocular pressure is normal, the silicone oil can be removed according to the regular oil removal schedule, usually 3 to 6 months after surgery. If the patient’s intraocular pressure rises after the surgery, the patient needs to control the intraocular pressure with intraocular pressure-lowering medication. If the intraocular pressure cannot be controlled by the conservative treatment of intraocular pressure medication, it is usually necessary to consider removing the silicone oil earlier. When to remove the silicone oil after retinal detachment surgery, need to follow the doctor’s instructions.