title: Central retinal artery occlusion caused by expansion of intraocular gas at high altitude.
abstract: OBJECTIVE
  To report a case of central retinal artery occlusion caused by expansion of intraocular gas during mountain travel at high altitude.
  
  
  METHODS
  Interventional case report.
  
  
  METHODS
  A 46-year-old man underwent vitrectomy with intraocular gas tamponade for rhegmatogenous retinal detachment, right eye. During his trip to Mountain Ali with an altitude of 6,210 feet, he felt a sensation of fullness and noted loss of vision in his right eye. When he came down to sea level, an intraocular pressure of 54 mm Hg was present in the right eye. He visited our clinics 2 weeks after the episode, and the right eye had best-corrected visual acuity of counting fingers, intraocular pressure of 14 mm Hg, attenuated retinal arteries, and a pale optic disk.
  
  
  RESULTS
  Because of irreversible damage to the retina of the right eye, he did not receive any treatment.
  
  
  CONCLUSIONS
  We should not neglect the possibility of hazard for patients with intraocular gas under low atmospheric pressure circumstances, such as mountain travel.
authors.affiliation: Department of Ophthalmology, Taipei Municipal Chung-Hsiao Hospital, Taiwan.
authors.forename: I-Mo
authors.initials: IM
authors.lastname: Fang
authors.forename: Jen-Shang
authors.initials: JS
authors.lastname: Huang
mesh_terms: D000531:Altitude; D005123:Eye; D005466:Fluorocarbons / Q000008:administration & dosage* / Q000009:adverse effects*; D005654:Fundus Oculi; D006801:Humans; D008297:Male; D008875:Middle Aged; D012161:Retinal Artery / Q000473:pathology; D015356:Retinal Artery Occlusion / Q000209:etiology* / Q000473:pathology; D014821:Vitrectomy
chemical_list: D005466:Fluorocarbons; C042852:perflutren