VNG is a test that is used to detect causes of patient’s dizziness. It consists of using special goggles with a micro camera that can detect movement of the eyes. During this test, special movement of the eyes and head are performed with assistance of the technician.Gentle application of warm or cold air in the ears is also part of the test.

The test usually lasts 40 minutes and is done in segments. 

Dizziness may be caused by many different conditions. Prior to having a VNG test, patient must first have a full neurological evaluation.