title: Optic nerve injury secondary to endoscopic sinus surgery: an analysis of three cases.
abstract: Major orbital complications after the endoscopic sinus surgeries are rare and of these, optic nerve injury is one of the most serious. This study was to undertaken to analyze 3 cases of optic nerve injury after endoscopic sinus surgery. The three cases included one patient with a loss of visual acuity and visual field defect, and two patients with total blindness. In all cases, no improvement of visual acuity was observed despite treatment. It is important to frequently check the location and direction of the endoscope during surgery to avoid optic nerve injury. In addition, surgeons must have a precise knowledge of the detailed anatomy through cadaver dissections, an ability to interpret the PNS CT scan and experienced procedural surgical skills.
authors.affiliation: Department of Otorhinolaryngology, Yonsei University College of Medicine, 134 Shinchon-dong, Seodaemun-gu, Seoul 120-752, Korea.
authors.forename: Jin Young
authors.initials: JY
authors.lastname: Kim
authors.forename: Hyun Jun
authors.initials: HJ
authors.lastname: Kim
authors.forename: Chang-Hoon
authors.initials: CH
authors.lastname: Kim
authors.forename: Jeung-Gweon
authors.initials: JG
authors.lastname: Lee
authors.forename: Joo-Heon
authors.initials: JH
authors.lastname: Yoon
mesh_terms: D000328:Adult; D001766:Blindness / Q000209:etiology; D004724:Endoscopy / Q000009:adverse effects*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D020221:Optic Nerve Injuries / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000209:etiology*; D010256:Paranasal Sinuses / Q000601:surgery*; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed; D014786:Vision Disorders / Q000209:etiology; D014792:Visual Acuity; D014794:Visual Fields