NEW LID SPECULUM FOR GLAUCOMA FILTERING SURGERY

Successful bleb formation in glaucoma filtering surgery depends on ade quate intraoperative visualization and atraumatic handling and preserv ation of normal conjunctiva and Tenon's capsule in order to avoid unne cessary stimulation and fibrous tissue formation. With these requireme nts in mind, we designed a new lid speculum that offers the following advantages: (1) wide surgical field exposure; (2) simultaneous globe f ixation; (3) obviation of placing a bridle suture; (4) minimal damage to the superior rectus muscle, conjunctiva, and Tenon's capsule; (5) c onjunctival incision placement far from the limbus; and (6) reduced op erating time.