title: Intraorbital optic nerve signal hyperintensity on magnetic resonance imaging sequences in perioperative hypotensive ischemic optic neuropathy.
abstract: A 61-year-old man experienced severe bilateral posterior ischemic optic neuropathy after cardiac bypass surgery. Routine magnetic resonance imaging sequences were normal, but diffusion-weighted and fluid-attenuated inversion recovery (FLAIR) sequences showed abnormal hyperintensity within both intra-orbital optic nerves. This imaging abnormality has not been previously reported in this setting.
authors.affiliation: Neuro-ophthalmology Section, Midwest Eye Institute and the Department of Ophthalmology, Indiana University Medical Center, Indianapolis, Indiana 46280, USA. vpurvin@iupui.edu
authors.forename: Valerie
authors.initials: V
authors.lastname: Purvin
authors.forename: Benjamin
authors.initials: B
authors.lastname: Kuzma
mesh_terms: D001479:Basal Ganglia / Q000473:pathology; D001766:Blindness / Q000209:etiology; D002544:Cerebral Infarction / Q000175:diagnosis / Q000209:etiology; D001026:Coronary Artery Bypass / Q000009:adverse effects*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009900:Optic Nerve / Q000473:pathology*; D018917:Optic Neuropathy, Ischemic / Q000175:diagnosis / Q000209:etiology*; D009915:Orbit / Q000473:pathology