title: Bilateral posterior ischemic optic neuropathy after lumbar spine surgery.
abstract: OBJECTIVE
  To report a case of bilateral posterior ischemic optic neuropathy (PION) in a healthy young patient after lumbar spine surgery which was initially diagnosed as functional visual loss.
  
  
  METHODS
  Observational case report.
  
  
  METHODS
  A 33-year-old woman who experienced visual loss in the immediate postoperative period after a lumbar spine fusion.
  
  
  METHODS
  Serial visual field testing and fundus examinations, ERG.
  
  
  RESULTS
  Bilateral PION was confirmed 2 months postoperatively with the development of bilateral optic disc pallor and a normal ERG.
  
  
  CONCLUSIONS
  Young patients without vascular risk factors may develop bilateral PION after otherwise uncomplicated lumbar spine surgery. In subjects complaining of visual loss in the postoperative period who have a normal fundus and normal neuroimaging, a diagnosis of PION should be suspected, and close follow-up is warranted.
authors.affiliation: Department of Ophthalmology, APC 7, Rhode Island Hospital, Brown Medical School, 593 Eddy Street, Providence, RI 02903, USA.
authors.forename: Marjorie A
authors.initials: MA
authors.lastname: Murphy
mesh_terms: D000328:Adult; D004596:Electroretinography; D005260:Female; D006801:Humans; D008159:Lumbar Vertebrae / Q000601:surgery*; D009898:Optic Disk / Q000473:pathology*; D018917:Optic Neuropathy, Ischemic / Q000175:diagnosis / Q000209:etiology*; D011542:Pseudarthrosis / Q000601:surgery*; D013123:Spinal Fusion / Q000009:adverse effects*; D013168:Spondylolisthesis / Q000601:surgery*; D014792:Visual Acuity; D014794:Visual Fields