J Korean Ophthalmol Soc.
2021 May;62(5):674-679. 10.3341/jkos.2021.62.5.674.
Video-oculographic Analysis in Nystagmus Patients
- Affiliations
-
- 1Department of Ophthalmology, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, Seoul, Korea
- KMID: 2515950
- DOI: http://doi.org/10.3341/jkos.2021.62.5.674
Abstract
- Purpose
To evaluate the usefulness of video-oculographic waveform analysis in nystagmus patients.
Methods
We carried out an observational case study in 18 patients (age, 7-32 years) with nystagmus who visited our clinic regularly for more than 1 year. Video-oculography (VOG) recording was performed (SLVNG®; SLMED, Seoul, Korea/3D Video-Oculography®; SMI, Teltow, Germany), and the velocity, peak velocity, and frequency of ocular movement were evaluated. The results of VOG analysis were compared to the diagnosis based on clinical examination and video recording.
Results
Eleven patients showed corresponding results, while the results differed between presumed diagnosis by VOG waveform analysis and clinical diagnosis in seven patients. Two of the discordant group showed additional waveforms that were not found on clinical examination. In addition, the number of inverse cases was two. The VOG waveform results corresponded to the diagnosis based on video recording in 16 patients.
Conclusions
Video-oculography is useful for diagnosis and management of nystagmus patients as it is noninvasive, comfortable, and can be performed in patients with difficulties with electronystagmography, such as pediatric patients. In addition, its waveform analysis and quantification are reliable taking into consideration diagnosis based on clinical examination and video recording.
