Journal of Yeungnam Medical Science

Yeungnam University College of Medicine, Yeungnam University Institute Medical Science (영남대 의대 학술지 편집위원회)
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Clinical significance of saccade test, smooth pursuit test, and optokinetic nystagmus test in nystagmography

안진검사에서 단속운동검사, 시추적검사, 시운동성 안진검사의 임상적 의의

  • Choi, Yoon Seok (Department of Otorhinolaryngology-Head and Neck Surgery, Yeungnam University College of Medicine) ;
  • Na, Hyung Gyun (Department of Otorhinolaryngology-Head and Neck Surgery, Yeungnam University College of Medicine) ;
  • Song, Si-Youn (Department of Otorhinolaryngology-Head and Neck Surgery, Yeungnam University College of Medicine) ;
  • Kim, Yong-Dae (Department of Otorhinolaryngology-Head and Neck Surgery, Yeungnam University College of Medicine) ;
  • Bae, Chang Hoon (Department of Otorhinolaryngology-Head and Neck Surgery, Yeungnam University College of Medicine)
  • 최윤석 (영남대학교 의과대학 이비인후-두경부외과학교실) ;
  • 나형균 (영남대학교 의과대학 이비인후-두경부외과학교실) ;
  • 송시연 (영남대학교 의과대학 이비인후-두경부외과학교실) ;
  • 김용대 (영남대학교 의과대학 이비인후-두경부외과학교실) ;
  • 배창훈 (영남대학교 의과대학 이비인후-두경부외과학교실)
  • Received : 2016.11.04
  • Accepted : 2017.05.04
  • Published : 2017.06.30
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Abstract

Background: Saccade test, smooth pursuit test, and optokinetic nystagmus test are clinically useful tests to accurately diagnose vertigo. However, there have only been a few studies regarding a correlation between the anatomical site of the lesion and the abnormality of eyeball movement in patients with vertigo. Methods: The medical records of 97 patients with vertigo between January 2006 and June 2008 were reviewed retrospectively. We classified many kinds of abnormalities regarding the saccade test, smooth pursuit test and optokinetic nystagmus test into several categories and analyzed the localizing lesion of vertigo. Results: According to the saccade test, both total saccade abnormality (S-total) and slow velocity of saccade (S-type 3) were shown to be significantly higher in the central lesion of vertigo. According to the smooth pursuit test, symmetrical unidirectional smooth pursuit abnormality (SP-type 2) was observed to be significantly higher in the peripheral lesion over vertigo. Moreover, according to the optokinetic nystagmus test, total optokinetic nystagmus abnormalities (OKN-total) were shown to be significantly useful findings in the diagnosis of the central lesion of vertigo. The coexisting abnormalities of all three tests (S+SP+OKN abnormalities) were shown to be significantly higher in the central lesion of vertigo. Conclusion: These results suggest that all these tests, saccade test, smooth pursuit test, and optokinetic nystagmus test, are very useful to distinguish between the central lesion and the peripheral lesion of vertigo. However, these tests are not beneficial in localizing the central lesion of vertigo.

Keywords

References

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