Surgery for glaucoma, the more classic trabeculectomy, for example, can be performed to control intraocular pressure and thereby reduce visual field damage. The surgical procedure mainly includes preoperative preparation, disinfection and toweling, anesthesia, and surgical excision. 1. Preoperative preparation: The surgeon should flush the tear duct and conjunctival sac for the patient. 2. Disinfecting and Toweling: patients undergoing glaucoma surgery should be placed in the supine position for eye disinfecting and toweling. 3. Anesthesia: firstly, choose the lid opener to open the eyelid, then carry out the surface anesthesia, you can choose the anesthesia drugs such as ophthalmic drops of Oxybuprocaine hydrochloride. 4. Surgical excision: make the conjunctival flap and scleral flap with conjunctival vault and corneal rim as the base respectively, then perform trabeculectomy and iridectomy, finally, suture the two corners of the sclera, and then suture the conjunctival flap, and then bandage the operated eye. Postoperative care should be taken as prescribed to avoid infection, and there should be regular follow-up and monitoring of IOP control.