Subjective visual vertical test in patients with chronic dizziness without abnormal findings in routine vestibular function tests.

Conclusion: The subjective visual vertical (SVV) test can detect abnormality of the otolithic organs and the graviceptive pathways present in a considerable number of patients having dizziness but presenting no abnormal findings in conventional vestibular function tests.

Objective: To evaluate whether the SVV test can detect dysfunction of the otolithic organs and perception of gravity in patients with dizziness having no abnormal finding on routine tests for the vestibular system.

Patients And Methods: Forty-four patients who complained of chronic dizziness but had no abnormal finding on routine tests for vestibular system and on brain MRI studies were selected between 2004 and 2006.