title: Measurement of dynamic visual acuity in patients with vestibular areflexia.
abstract: CONCLUSIONS
  The test is simple and sensitive enough to separate normal subjects from patients suffering from a vestibular loss. There was also a good correlation between the objective results and the subjective complaint of oscillopsia.
  
  
  OBJECTIVE
  Oscillopsia (i.e. blurred vision while walking) is often reported by patients suffering from vestibular loss. We developed a test to quantify oscillopsia.
  
  
  METHODS
  Visual acuity was determined in 16 normal subjects and in 8 patients suffering from a bilateral vestibular loss, at rest and while walking at increasing speed on a treadmill. Snellen optotypes were randomly projected on a screen and the visual acuity was determined with an adaptative staircase algorithm.
  
  
  RESULTS
  In normal subjects, the visual acuity did not decrease markedly during walking, but decreased significantly in patients with a vestibular loss.
authors.affiliation: Department of Clinical Neurosciences, University Hospitals of Geneva, Switzerland. fanylambert@yahoo.fr <fanylambert@yahoo.fr>
authors.forename: Stéphanie
authors.initials: S
authors.lastname: Lambert
authors.forename: Alain
authors.initials: A
authors.lastname: Sigrist
authors.forename: Olga
authors.initials: O
authors.lastname: Delaspre
authors.forename: Marco
authors.initials: M
authors.lastname: Pelizzone
authors.forename: Jean-Philippe
authors.initials: JP
authors.lastname: Guyot
mesh_terms: D000328:Adult; D000368:Aged; D016022:Case-Control Studies; D005080:Exercise Test; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012021:Reflex, Abnormal / Q000502:physiology*; D012027:Reflex, Vestibulo-Ocular / Q000502:physiology*; D015837:Vestibular Diseases / Q000503:physiopathology*; D014724:Vestibular Function Tests / Q000379:methods*; D014787:Vision Tests / Q000379:methods; D014792:Visual Acuity / Q000502:physiology*; D016138:Walking / Q000502:physiology