Glaucoma is the result of visual field damage and optic nerve atrophy caused by high eye pressure. The current surgical approach to lowering pressure is often chosen to do a filtration procedure, which is often referred to as trabeculectomy. The surgical procedure for trabeculectomy is: i. Preoperative preparation, flushing of the conjunctival sac and tear duct. ii. Second, the patient is instructed to lie in the supine position and routinely sterilize the pads and surgical eye. Third, the lid is opened with a lid opener and a superficial anesthetic such as 2% lidocaine or oxybuprocaine is ordered. IV. Inject 0.5 ml of lidocaine behind the globe or hemisphere. V. Make a conjunctival flap with the conjunctival vault as the base, then stop the bleeding, make a scleral flap with the corneal rim as the base, remove the trabeculae, and root cut the iris. Then suture the two corners of the scleral flap so that the atrial fluid can be retained, and after gently pressing the eye, the atrial fluid can still flow out, which is the right looseness. The conjunctival flap is then sutured, eye ointment is applied, and the operated eye is bandaged.