[Trabeculectomy with crescent tunnel knife under surface anesthesia for glaucoma: report of 41 cases]

This study aims to modify the surgical procedure of conventional trabeculectomy for glaucoma by incorporating scleral flap preparation with crescent tunnel knife under surface anesthesia. A total of 41 patients (48 eyes) received this modified surgical procedure, with the anesthesia being successfully implemented in all the cases. The time consumption by the operation on each eye averaged 17 min, shortened by 37% compared with the conventional procedure. The postoperative intraocular pressure was well under control without any complications arising either during or after the operation, showing the safety, rapidness and efficacy of this surgical approach in the treatment of glaucoma.