Tube shunt surgery is a procedure used to treat glaucoma, a condition that increases pressure in the eye and can lead to vision loss. During the surgery, a small tube is implanted in the eye to help drain excess fluid, thereby reducing intraocular pressure. This helps protect the optic nerve and maintain vision. The surgery is typically performed under local anesthesia and can be done on an outpatient basis. After the procedure, patients may need to use eye drops and attend follow-up appointments to monitor their recovery and ensure the shunt is functioning properly.