title: Hyphema caused by a metallic intraocular foreign body during magnetic resonance imaging.
abstract: OBJECTIVE
  To report a 63-year-old man with a retained intraocular foreign body who developed a hyphema during magnetic resonance imaging (MRI) of the brain.
  
  
  METHODS
  Case report and review of the current literature on ocular injury caused by intraocular foreign bodies when subjected to an electromagnetic field.
  
  
  RESULTS
  Our patient underwent a brain MRI, and the intraocular foreign body caused a hyphema and increased intraocular pressure. The presence and location of the intraocular foreign body were determined by computed tomography (CT).
  
  
  CONCLUSIONS
  Magnetic resonance imaging can cause serious ocular injury in patients with ferromagnetic intraocular foreign bodies. This case demonstrates the importance of obtaining an occupational history, and, when indicated, a skull x-ray or CT to rule out intraocular foreign body before an MRI study.
authors.affiliation: Department of Ophthalmology, Stanford University Medical Center, Stanford, California 94305-5308, USA.
authors.forename: C N
authors.initials: CN
authors.lastname: Ta
authors.forename: R W
authors.initials: RW
authors.lastname: Bowman
mesh_terms: D000867:Anterior Chamber / Q000000981:diagnostic imaging / Q000293:injuries*; D001921:Brain / Q000473:pathology; D005129:Eye Foreign Bodies / Q000150:complications* / Q000000981:diagnostic imaging; D015807:Eye Injuries, Penetrating / Q000000981:diagnostic imaging / Q000209:etiology*; D017809:Fatal Outcome; D005548:Foreign-Body Migration / Q000000981:diagnostic imaging / Q000209:etiology*; D006801:Humans; D006988:Hyphema / Q000209:etiology*; D007429:Intraocular Pressure; D008279:Magnetic Resonance Imaging / Q000009:adverse effects*; D008297:Male; D008670:Metals; D008875:Middle Aged; D014057:Tomography, X-Ray Computed
chemical_list: D008670:Metals