title: Nonarteritic anterior ischemic optic neuropathy in patients with sleep apnea while being treated with continuous positive airway pressure.
abstract: OBJECTIVE
  To report three cases of nonarteritic anterior ischemic optic neuropathy (NAION) that occurred in patients with sleep apnea syndrome (SAS) while being treated with continuous positive airway pressure (CPAP).
  
  
  METHODS
  A prospective, noncomparative case series.
  
  
  METHODS
  Prospective review of 108 patients with NAION diagnosed between 2002 and 2003 to identify any patients who developed NAION while being treated for SAS with CPAP.
  
  
  RESULTS
  One patient had bilateral sequential NAION and two patients had unilateral NAION despite treatment with CPAP for SAS. All the patients were being treated with CPAP for a period ranging from 4 months to 6 years before the onset of NAION.
  
  
  CONCLUSIONS
  In this series, CPAP did not prevent the development of NAION in SAS patients. Larger observational studies are needed to study the benefit of CPAP in preventing NAION in patients with SAS.
authors.affiliation: Neuroophthalmology Service, Wills Eye Hospital, Thomas Jefferson University, Philadelphia, Pennsylvania 19107, USA. r_behbehani@hotmail.com
authors.forename: Raed
authors.initials: R
authors.lastname: Behbehani
authors.forename: Michaela K
authors.initials: MK
authors.lastname: Mathews
authors.forename: Robert C
authors.initials: RC
authors.lastname: Sergott
authors.forename: Peter J
authors.initials: PJ
authors.lastname: Savino
mesh_terms: D045422:Continuous Positive Airway Pressure; D006801:Humans; D008297:Male; D008875:Middle Aged; D018917:Optic Neuropathy, Ischemic / Q000150:complications* / Q000175:diagnosis; D011446:Prospective Studies; D012891:Sleep Apnea Syndromes / Q000150:complications* / Q000628:therapy*; D014792:Visual Acuity