title: Acute sphenoid sinusitis induced blindness: a case report.
abstract: BACKGROUND
  Acute, isolated sphenoid sinusitis is a rare but potentially devastating clinical entity. Missing this diagnosis can lead to permanent vision loss due to injury of the optic nerve. Patients may present with preseptal inflammation, lid edema, chemosis, or ophthalmoplegia.
  
  
  OBJECTIVE
  We report a case of acute sphenoid sinusitis in a 10-year-old child who presented to the Emergency Department with essentially painless vision loss.
  
  
  METHODS
  Previously healthy, the patient reported progressive decrease in vision in her right eye for the 5 days prior. Other than blurred vision in the right eye, she complained of a mild frontal headache and right eye irritation the past week, which had abated. On examination, she was reading a book with her head tilted to one side. She had no photophobia, or facial or eyelid swelling. Her pupils were 5 mm bilaterally, but the right was non-reactive to light. She was unable to see two fingers 6 inches in front of her face (right eye), whereas her visual acuity on the left was 20/25. She had bilateral elevated intraocular pressures and a Marcus Gunn pupil on the right. Ophthalmology was consulted and the diagnosis of acute sphenoid sinusitis causing compression and vascular compromise to the optic nerve was diagnosed ultimately by magnetic resonance imaging. The patient was transferred to the nearest pediatric specialty hospital, where an emergent endoscopic sphenoidotomy was performed. The patient's vision subsequently returned.
  
  
  CONCLUSIONS
  Sphenoid sinusitis should be considered in patients presenting with acute vision loss. Awareness, early diagnosis, and intervention help prevent permanent complications.
authors: Department of Emergency Medicine, Lehigh Valley Hospital and Health Network, Allentown, Pennsylvania 18103, USA.
authors: Shawn C
authors: SC
authors: Reynolds
authors: Elizabeth M
authors: EM
authors: Evans
mesh_terms: D000208:Acute Disease; D001766:Blindness / Q000209:etiology*; D002648:Child; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D015524:Sphenoid Sinusitis / Q000150:complications* / Q000175:diagnosis* / Q000601:surgery