title: Preemptive sub-tenon's anesthesia for pars plana vitrectomy under general anesthesia: is it effective?
authors.forename: William E
authors.initials: WE
authors.lastname: Smiddy
authors.forename: Steven
authors.initials: S
authors.lastname: Gayer
mesh_terms: D000700:Analgesics / Q000008:administration & dosage; D000768:Anesthesia, General / Q000379:methods*; D000772:Anesthesia, Local / Q000379:methods*; D019162:Anesthetics, Combined / Q000008:administration & dosage; D000779:Anesthetics, Local / Q000008:administration & dosage*; D002045:Bupivacaine / Q000008:administration & dosage; D005205:Fascia / Q000187:drug effects; D006801:Humans; D006821:Hyaluronoglucosaminidase / Q000008:administration & dosage; D007267:Injections; D008012:Lidocaine / Q000008:administration & dosage; D009325:Nausea / Q000517:prevention & control*; D010149:Postoperative Pain / Q000517:prevention & control*; D016896:Treatment Outcome; D014821:Vitrectomy
chemical_list: D000700:Analgesics; D019162:Anesthetics, Combined; D000779:Anesthetics, Local; D008012:Lidocaine; D006821:Hyaluronoglucosaminidase; D002045:Bupivacaine