title: [CT scan efficiency in emergency room diagnosis for optic neuropathy due to trauma].
abstract: OBJECTIVE
  To define radiological patterns for Traumatic Optic Neuropathy (TON), which is of special concern for patients suffering of poor awareness when exploration of visual function is needed. We also studied final visual acuity in connection with the early radiological findings.
  
  
  METHODS
  14 optic neuropathies due to trauma, with their emergency requested CT Scan and evolution of visual acuity are reported.
  
  
  RESULTS
  76.9% of the patients showed radiological findings suggesting a TON, 23% consisted in intraorbitary hematic collections, 15% comprised avulsions of optic disc, 15% showed intraorbitary bony fragments and only 15% showed optic canal fractures.
  
  
  CONCLUSIONS
  We report the radiological findings suggesting a TON which concerns the polytraumatized patients. Together with the clinical exploration, CT Scan becomes the most important method for the assessment of TON in emergency settings. In cases of avulsion of the optic nerve, visual acuity was regarded as no light perception by the patients, while in others this perception varied.
authors.affiliation: Servicio de Oftalmología, Hospital Universitario La Fe, Valencia, España.
authors.forename: E
authors.initials: E
authors.lastname: López Sánchez
authors.forename: E
authors.initials: E
authors.lastname: España Grégori
authors.forename: E
authors.initials: E
authors.lastname: Francés Muñoz
authors.forename: J J
authors.initials: JJ
authors.lastname: Mondéjar García
mesh_terms: D004630:Emergencies; D006406:Hematoma / Q000000981:diagnostic imaging; D006801:Humans; D020221:Optic Nerve Injuries / Q000000981:diagnostic imaging*; D009915:Orbit / Q000000981:diagnostic imaging / Q000293:injuries; D009917:Orbital Fractures / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed