What is vng testing

Positional Nystagmus will help to give an idea of the health of your inner ear system. You will be asked to move your head and body into different positions, checking for inappropriate eye movements in each position. If there is any fluid blockage in the inner ear, it could be the cause of vertigo or balance issues.

Caloric Testing can determine if you have vestibular weakness in one or both ears by checking to see if your ears can detect sensations properly. Your eyes will be monitored while your inner ears are stimulated one at a time with warm or cold air. Because of the nature of the tests, there are some preparations you will need to make before your evaluation. Our staff will provide you with clear instructions on how to prepare for your examination.

For example, we may ask you to discontinue certain medications, not to consume any alcoholic beverages or caffeinated drinks at least 48 hours before the tests, to remove contact lenses or eyeglasses or to fast for a few hours prior to testing. Reviewed By Kristen Janky, Ph. Vestibular Tests: VNG. VNG stands for Videonystagmography and this is a traditional test of vestibular function that has been around for many years.

So for the test the patients will wear goggles that have cameras in them and then their job during the ocular motor portion of the test is to watch a light on the wall moving different directions.

So we measure how well patients can look to the left and to the right can monitor a dot that swings back and forth and keep your eyes that a dot that randomly shows up on the light bar. To monitor the movements of the eyes, infrared goggles are placed around the eyes to record eye movements during testing. VNG testing is non-invasive, and only minor discomfort is felt by the patients during testing as a result of wearing goggles. Appointments usually last about 1.

Skip to primary navigation Skip to main content Skip to primary sidebar Navigation. There are 4 main parts to a VNG test: Occular Mobility You will be asked to have your eyes follow objects that jump from place to place, stand still, or move smoothly. The technician will be looking for any slowness or inaccuracies in your ability to follow visual targets.

This may indicate a central or neurological problem, or possibly a problem in the pathway connecting the vestibular system to the brain. Optokinetic Nystagmus You will be asked to view a large, continuously moving visual image to see if your eyes can appropriately track these movements.