Related Experiment Videos
[Acute peripheral vestibular lesions. Monocular subjective visual vertical and cyclodeviation].
T Schmidt1, K F Hamann, I Hofmann
1Augenklinik rechts der Isar der Technischen Universität München, Ismaningerstrasse 22, 81675 München.
Summary
Monocular subjective visual vertical (SVV) measurements correlate well with objective cyclodeviation in patients with vestibular disease. This finding supports using monocular SVV assessment in clinical practice for better diagnosis.
Area of Science:
- Ophthalmology
- Neurology
- Vestibular System
Context:
- Vestibular disorders can cause deviations in the subjective visual vertical (SVV).
- These deviations are often transient but can impact patient compensation.
- The relationship between SVV deviation and objective retinal cyclodeviation requires further investigation.
Purpose:
- To investigate the correlation between subjective visual vertical (SVV) deviation and objective cyclodeviation of the retina in patients with acute vestibular disease.
- To determine if monocular SVV measurements offer a better correlation with cyclodeviation compared to binocular measurements.
Summary:
- A study included 20 patients with acute vestibular disease and significant SVV deviation.
- Monocular SVV was measured, and fundus photography was used to assess cyclodeviation by measuring the angle between the optic disc and macula.
- A good qualitative correlation was found between monocular SVV (mean 7.9°) and objective cyclodeviation (mean 10.6°).
Impact:
- Monocular SVV measurement shows a strong correlation with objective cyclodeviation, unlike binocular SVV.
- This suggests that monocular SVV assessment is a valuable tool in clinical examinations for vestibular disorders.
- Further research is needed to identify the specific vestibular system components responsible for cyclodeviation.