The Video Ocular Counter-Roll Test: Validation for Vestibular Dysfunction Diagnosis in Clinical Practice

Area of Science:

• Neuroscience
• Ophthalmology
• Audiology

Background:

• Vestibular dysfunction diagnosis relies on established but complex tests.
• The video ocular counter-roll (vOCR) test, using video-oculography (VOG) goggles, presents a potentially simpler alternative.
• Assessing the clinical applicability and diagnostic accuracy of vOCR is crucial.

Purpose of the Study:

• To compare the diagnostic performance of the vOCR test against the caloric test for vestibular dysfunction.
• To evaluate the clinical applicability of the vOCR test in a real-world setting.

Main Methods:

• A retrospective cohort study was conducted at a tertiary academic referral center.
• 134 patients underwent both vOCR and caloric tests.
• vOCR performance was analyzed for sensitivity, specificity, and AUC, with a 2-step approach for diagnosing bilateral (BVH) and unilateral (UVH) vestibular hypofunction.

Main Results:

• vOCR demonstrated high sensitivity (92.5%) and specificity (85.7%) for BVH (AUC 95.1%) and high sensitivity (97.7%) for UVH (AUC 79.2%).
• Significant differences in vOCR measurements were observed across normal, UVH, and BVH groups (P < .001).
• vOCR angles indicated laterality in the UVH group.

Conclusions:

• The vOCR test exhibits high sensitivity and specificity for diagnosing vestibular dysfunction compared to the caloric test.
• Integrating vOCR into vestibular testing batteries can improve diagnostic efficiency and patient comfort.