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Year : 2016  |  Volume : 22  |  Issue : 3  |  Page : 208-212

Subjective visual vertical and horizontal: Normative values using a software-based test in the Indian population

Department of ENT, Christian Medical College, Vellore, Tamil Nadu, India

Correspondence Address:
Dr. Ann Mary Augustine
Department of ENT, Christian Medical College, Vellore, Tamil Nadu
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0971-7749.187972

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Aims and Objectives: To determine the normative values for static and dynamic subjective visual vertical and horizontal (SVV and SVH) in a group of Indian volunteers. Materials and Methods: This hospital-based, prospective, cross-sectional study was done on 82 normal adults. The SVV and SVH angles were measured under static and dynamic conditions using the software MUS_VS-V1.3.2.Rev B (Synapsis, France). Six readings each were taken for SVV and SVH in both static and dynamic situations. Results: The obtained mean value for static SVV, dynamic SVV, static SVH, and dynamic SVH were 1.52° ± 0.70°, 1.96° ± 0.65°, 1.64° ± 0.81°, and 1.99° ± 0.78°, respectively. Static SVV for females was 1.4° ± 0.68°; static SVV for males was 1.58° ± 0.71°; dynamic SVV for females was 1.82° ± 0.64°; dynamic SVV for males was 2.04° ± 0.65°; static SVH for females was 1.63° ± 0.76°; static SVH for males was 1.65° ± 0.84°; dynamic SVH for females was 1.80° ± 0.60°, and dynamic SVH for males was 2.1° ± 0.86°. There was no significant difference between the sexes and between the age groups 20–40 years and 41–60 years. Conclusions: This is the only study in the Indian population, and the normative data obtained in this study can serve as a reference for future studies and vestibular testing, especially in those suffering from chronic vertigo and suspected to have otolithic pathway abnormalities.

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