title: Determining subjective visual vertical: dynamic versus static testing.
abstract: OBJECTIVE
  Comparative evaluation of two tests that, as a visual reference, respectively use a static light source (static testing) and a dynamic one (dynamic testing) to analyze subjective visual vertical in patients with unilateral vestibular dysfunction.
  
  
  METHODS
  Prospective study.
  
  
  METHODS
  Otolaryngology and Cervicofacial Surgery Division, Department of Medical-Surgical Specialization, University of Perugia, Italy.
  
  
  METHODS
  Forty-two patients with unilateral vestibular dysfunction.
  
  
  METHODS
  Determination of subjective visual vertical 1 to 2 days (first test) after the onset of vertigo. Repetition of 8 to 10 days (second test) and 90 days (third test) after onset.
  
  
  METHODS
  Test sensitivity and specificity.
  
  
  RESULTS
  The sensitivity of the static test was 85.7, 73.3, and 59.5% during the first, second, and third test, respectively. The dynamic test showed a sensitivity of 91.3, 86.8, and 78.1%, respectively. Specificity was 100% for the static test and 96.7% for the dynamic test.
  
  
  CONCLUSIONS
  The dynamic test proved to be more useful in the weeks after the onset of dysfunction. Given the greater sensitivity of this test, the reduction in perception error time makes it more suitable for revealing false negatives that emerged when using the static test alone.
authors: Otolaryngology and Cervicofacial Surgery Division, Department of Medical-Surgical Specialization, University of Perugia, Perugia, Italy.
authors: Mario
authors: M
authors: Faralli
authors: Giampietro
authors: G
authors: Ricci
authors: Egisto
authors: E
authors: Molini
authors: Fabrizio
authors: F
authors: Longari
authors: Guido
authors: G
authors: Altissimi
authors: Antonio
authors: A
authors: Frenguelli
mesh_terms: D000328:Adult; D004424:Ear Canal; D004427:Ear Diseases / Q000175:diagnosis / Q000503:physiopathology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010037:Otolithic Membrane / Q000502:physiology; D010775:Photic Stimulation; D011446:Prospective Studies; D014717:Vertigo / Q000175:diagnosis / Q000503:physiopathology; D015837:Vestibular Diseases / Q000175:diagnosis* / Q000503:physiopathology; D014724:Vestibular Function Tests; D014796:Visual Perception / Q000502:physiology*