A newmethod to analyze the subjective visual vertical in patients with bilateral vestibular dysfunction
Clinics
; 67(10): 1127-1131, Oct. 2012. tab
Article
in En
| LILACS
| ID: lil-653474
Responsible library:
BR1.1
ABSTRACT
OBJECTIVE:
The aim of this study was to assess the subjective visual vertical in patients with bilateral vestibular dysfunction and to propose a new method to analyze subjective visual vertical data in these patients.METHODS:
Static subjective visual vertical tests were performed in 40 subjects split into two groups. Group A consisted of 20 healthy volunteers, and Group B consisted of 20 patients with bilateral vestibular dysfunction. Each patient performed six measurements of the subjective visual vertical test, and the mean values were calculated and analyzed.RESULTS:
Analyses of the numerical values of subjective visual vertical deviations (the conventional method of analysis) showed that the mean deviation was 0.326±1.13º in Group A and 0.301±1.87º in Group B. However, by analyzing the absolute values of the subjective visual vertical (the new method of analysis proposed), the mean deviation became 1.35±0.48º in Group A and 2.152±0.93º in Group B. The difference in subjective visual vertical deviations between groups was statistically significant (p,<0.05) only when the absolute values and the range of deviations were considered.CONCLUSION:
An analysis of the absolute values of the subjective visual vertical more accurately reflected the visual vertical misperception in patients with bilateral vestibular dysfunction.Key words
Full text:
1
Index:
LILACS
Main subject:
Vestibular Function Tests
/
Visual Perception
/
Vestibular Diseases
Type of study:
Diagnostic_studies
Limits:
Adult
/
Female
/
Humans
/
Male
Language:
En
Journal:
Clinics
Journal subject:
MEDICINA
Year:
2012
Type:
Article