Videonystagmography (VNG) - is a term used to describe a series of tests used to evaluate the status of the peripheral and central vestibular system.
What is VNG (videonystagmography)?
A VNG is to determine if there is something wrong with the vestibular portion of the inner ear. A normal VNG usually lasts 45-60 minutes. There is no lasting effect from the test.
The test consists of three parts:
1. OCULOMOTOR TESTS:
Oculomotor tests evaluate eye movements which originate in the cerebellum (the part of the brain that controls balance and coordination).
Positional testing is performed to determine if the vestibular system responds normally and symmetrically to changes in head position.
Caloric tests determine the presence and symmetry of vestibular responsiveness of the horizontal semicircular canal (a part of the inner ear that helps provide information to the brain about balance and location).
What should I do to prepare for this test?
STOP all medications for dizziness 24 hours (such as meclizine/Antivert) prior to exam.
DO NOT wear any eye makeup.
When will my doctor get the results?
Results of your test will be sent to your referring physician in a few days time. Please make sure to follow up with your referring physician to discuss the results of the test.