Document Detail

Recovery of dynamic visual acuity in unilateral vestibular hypofunction.
MedLine Citation:
PMID:  12925338     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To determine the effect of vestibular exercises on the recovery of visual acuity during head movement in patients with unilateral vestibular hypofunction.
STUDY DESIGN: Prospective, randomized, double-blind study.
SETTING: Ambulatory referral center.
PATIENTS: Twenty-one patients with unilateral vestibular hypofunction, aged 20 to 86 years.
INTERVENTION: One group (13 patients) performed vestibular exercises designed to enhance the vestibulo-ocular reflex, and the other group (8 patients) performed placebo exercises. The placebo group was switched to vestibular exercises after 4 weeks.
OUTCOME MEASURES: Measurements of dynamic visual acuity (DVA) during predictable (DVA-predictable) and unpredictable (DVA-unpredictable) head movements by means of a computerized test and measurement of intensity of oscillopsia by means of a visual analog scale.
RESULTS: As a group, patients who performed vestibular exercises showed a significant improvement in DVA-predictable (P<.001) and DVA-unpredictable (P<.001), while those performing placebo exercises did not (P =.07). On the basis of stepwise regression analysis, the leading factor contributing to improvement was vestibular exercises. This reached significance for DVA-predictable (P =.009) but not DVA-unpredictable (P =.11). Other factors examined included age, time from onset, initial DVA, oscillopsia, and duration of treatment. Changes in oscillopsia did not correlate with DVA-predictable or DVA-unpredictable.
CONCLUSIONS: Use of vestibular exercises is the main factor involved in recovery of DVA-predictable and DVA-unpredictable in patients with unilateral vestibular hypofunction. Exercises may foster the use of centrally programmed eye movements that could substitute for the vestibulo-ocular reflex. The DVA-predictable would benefit more from this than would DVA-unpredictable.
Susan J Herdman; Michael C Schubert; Vallabh E Das; Ronald J Tusa
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Publication Detail:
Type:  Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Archives of otolaryngology--head & neck surgery     Volume:  129     ISSN:  0886-4470     ISO Abbreviation:  Arch. Otolaryngol. Head Neck Surg.     Publication Date:  2003 Aug 
Date Detail:
Created Date:  2003-08-19     Completed Date:  2003-10-02     Revised Date:  2014-07-28    
Medline Journal Info:
Nlm Unique ID:  8603209     Medline TA:  Arch Otolaryngol Head Neck Surg     Country:  United States    
Other Details:
Languages:  eng     Pagination:  819-24     Citation Subset:  AIM; IM    
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MeSH Terms
Aged, 80 and over
Double-Blind Method
Exercise Therapy*
Middle Aged
Prospective Studies
Regression Analysis
Vestibular Diseases / physiopathology*,  therapy*
Visual Acuity / physiology*
Grant Support
03196//PHS HHS

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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