Wydawnictwo Medyczne Mediton

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the Polish Society of Audiology and Phoniatrics


Original articles

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Examination of subjective visual vertical in patients with multiple sclerosis
Magdalena Józefowicz-Korczyńska 1/, Renata Obrębska 2/, Andrzej Napieralski 3/
  • 1/ Zakład Układu Równowagi, I Katedra Otolaryngologii UM w Łodzi
  • 2/ Zespół Opieki Zdrowotnej w Łęczycy
  • 3/ Katedra Mikroelektroniki i Technik Informatycznych Politechniki Łódzkiej

Introduction. Demyelination lesions found in the central nervous system of multiple sclerosis (MS) patients may adversely
affect their spatial orientation, including disturbed subjective visual vertical (SVV).
Aim. Assessment of spatial orientation in MS patients by SVV test.
Material and methods. Sixty subjects, including 30 MS patients, underwent SVV evaluation in Balance Division Department of Otolaryngology, Medical University of Lodz. The SVV equipment has been developed in cooperation with Institute of Electronics, Technical University of Lodz. The SVV was measured in total 30 times under three different conditions for: right and left eye viewing and both eyes viewing in clockwise and counterclockwise direction, 5 times in each direction.
Results. In the MS patients, the mean SVV values for all paradigms were significantly higher compared with the control group: 2.8°±2.46° vs. 0.87°±0.47°, respectively (both eyes viewing). Abnormal SVV were observed significantly more frequently in MS patients than in control group, 33.3% vs. 0%, respectively.
Conclusions. Deviation of SVV is frequent in MS patients and may be responsible for spatial disorientation. Application of
new-developed noninvasive equipment facilitates quantitative assessment of spatial orientation.

Otorynolaryngologia Vol 13. No 4. Decemberpages: from 205to 212
full version