A newmethod to analyze the subjective visual vertical in patients with bilateral vestibular dysfunction
Clinics
; Clinics;67(10): 1127-1131, Oct. 2012. tab
Article
em En
| LILACS
| ID: lil-653474
Biblioteca responsável:
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.Palavras-chave
Texto completo:
1
Índice:
LILACS
Assunto principal:
Testes de Função Vestibular
/
Percepção Visual
/
Doenças Vestibulares
Tipo de estudo:
Diagnostic_studies
Limite:
Adult
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Clinics
Assunto da revista:
MEDICINA
Ano de publicação:
2012
Tipo de documento:
Article