VNG testing utilizes cameras that are imbedded into goggles to monitor and measure eye movement. It is a series of several tests that helps determine:
- How well your eyes communicate with your balance system and your brain
- Whether a change in position of the head causes dizziness or imbalance
- Whether your balance organs are functioning equally when compared to each other
- When you arrive at Sanford Neurodiagnostics for your appointment, you will be asked to complete a questionnaire regarding your symptoms and experiences. Once the questionnaire is completed, you will be taken into the VNG room and will be asked to sit in the exam chair or on a table. Goggles will then be placed over your eyes and the exam will begin.
The VNG consists of three parts:
- You will be asked to watch a series of targets on the video screen or LCD screen. This is very simple, but will yield important information about how well your eyes are communicating with your brain.
- The examiner will assist you into several different positions. This helps to determine whether a change in the position of your head and/or body will evoke the unpleasant symptoms that you have described.
- The final test in the VNG is caloric irrigation. The examiner will have you lie down on the table and will put either warm or cool water (or air) into your ear for approximately 60 seconds, during which you may experience a "revolving" or "floating" sensation. It should not be painful in any way. This will be done a total of four times; each ear with warm irrigation and each ear with cool irrigation with a brief recovery period between each irrigation.
- At the completion of the VNG, the examiner will remove the goggles and will help you to sit up. You should be feeling fine by the time you leave Sanford Neurodiagnostics.
Sanford Health in Bismarck is the only health care institution in Bismarck that performs VNG testing.
Please check in at registration on the main floor of Sanford Medical Center. Because paperwork may be involved in the registration process, please arrive 15 minutes before your appointment. If this appointment must be cancelled or changed, please call (701) 323-6050.