title: Bilateral, nearly simultaneous anterior ischemic optic neuropathy complicated by diabetes and bilateral, small, crowded optic discs.
abstract: BACKGROUND
  Bilateral simultaneous anterior ischemic optic neuropathy (AION) is uncommon. We report a case of bilateral and nearly simultaneously occurring AION.
  
  
  METHODS
  A 61-year-old man was referred to our hospital with bilateral optic disc edema.
  
  
  METHODS
  Visual field testing demonstrated inferior nasal defect OD and inferior defect OS. Fluorescein angiography showed a delay of dye filling in the superior part of the optic disc in both eyes. The patient had poorly controlled diabetes. A mild increase in erythrocyte sedimentation rates and creactive protein was observed, but the results of temporal artery biopsy were negative. His optic discs were small and lacked biological cups, which has been identified as a risk factor for developing AION.
  
  
  CONCLUSIONS
  The complications of the structural anomaly, also known as "disc at risk," and diabetes might have caused the bilateral and nearly simultaneously occurring AION.
authors.affiliation: Department of Ophthalmology, Osaka Medical College, Takatsuki, Japan.
authors.forename: Junko
authors.initials: J
authors.lastname: Shibayama
authors.forename: Hidehiro
authors.initials: H
authors.lastname: Oku
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Imamura
authors.forename: Sumiko
authors.initials: S
authors.lastname: Kajiura
authors.forename: Jun
authors.initials: J
authors.lastname: Sugasawa
authors.forename: Tsunehiko
authors.initials: T
authors.lastname: Ikeda
mesh_terms: D001794:Blood Pressure; D001799:Blood Sedimentation; D002097:C-Reactive Protein / Q000378:metabolism; D048909:Diabetes Complications; D005124:Eye Abnormalities / Q000150:complications*; D005451:Fluorescein Angiography; D006801:Humans; D008297:Male; D008875:Middle Aged; D009898:Optic Disk / Q000002:abnormalities*; D018917:Optic Neuropathy, Ischemic / Q000209:etiology*; D010211:Papilledema / Q000209:etiology; D014792:Visual Acuity; D014794:Visual Fields
chemical_list: D002097:C-Reactive Protein