Videonystagmography (VNG), also known as dizzy and balance testing, is a diagnostic exam that evaluates inner ear and brain function.
At AAENT, located in Severna Park and Annapolis, Maryland, our providers use advanced VNG technology to identify the causes of dizziness, vertigo, and balance disorders.
Dizziness and balance problems can significantly impact your daily life, making even simple tasks feel challenging or unsafe. Videonystagmography (VNG) is a specialized test that helps our ENT team determine the cause of your dizziness, vertigo, or balance issues. By providing a detailed assessment of your inner ear and eye movements, VNG allows us to pinpoint the source of your symptoms and guide effective treatment.
What is VNG?
VNG, or videonystagmography, is a series of tests that evaluate your inner ear and eye movement function. The inner ear, or vestibular system, plays a critical role in maintaining balance. By tracking how your eyes move in response to visual and physical stimuli, VNG helps identify whether your dizziness originates from the inner ear, the brain, or a combination of factors.
During a VNG test, you will wear lightweight goggles equipped with cameras that track your eye movements. The test usually includes several components:
- Oculomotor Testing: Evaluates how well your eyes move and follow visual targets.
- Positional Testing: Assesses how changes in head position affect your balance and eye movements.
- Caloric Testing: Introduces warm or cool air or water into the ear canal to stimulate the inner ear and measure the resulting eye movements.
These measurements provide precise information about your vestibular system’s function, helping your doctor understand the cause of your dizziness or imbalance.
What to Expect During VNG
When you arrive for your VNG (Videonystagmography) test, our team will guide you through each step to ensure your comfort and understanding. The test is non-invasive, generally well-tolerated, and provides valuable insights into the source of your dizziness or balance issues.
- Preparation: Before the test, you may be asked to avoid alcohol, caffeine, and certain medications that could interfere with results. Our staff will provide detailed instructions to help ensure accurate testing.
- Initial Assessment: Before the test begins, a clinician will review your medical history and symptoms. You may be asked to describe when your dizziness occurs, how long it lasts, and any triggers you have noticed.
- Eye Movement Tracking: You will wear specialized goggles equipped with cameras that track your eye movements. These cameras are sensitive and allow the clinician to see how your eyes respond to visual and positional changes.
- Oculomotor Tests: During this portion, you may be asked to follow a moving target with your eyes, such as a light or a dot on a screen. This helps assess how your eyes coordinate with your inner ear and brain.
- Positional Tests: You will be guided into different head and body positions while your eye movements are recorded. Some positions may trigger mild dizziness, but this is temporary and expected.
- Caloric Testing: Warm or cool air (or sometimes water) is gently introduced into your ear canal to stimulate the inner ear. This may cause brief sensations of spinning or lightheadedness, which subside shortly after the test.
- Completion and Review: The full test usually takes 45–90 minutes. Once finished, your clinician will review the results and discuss next steps, which may include treatment options or further testing.
Throughout the test, our team is there to ensure your safety and comfort. Many patients find that having a clear understanding of the procedure helps ease any anxiety and allows them to focus on getting accurate results.
Who Can Benefit from VNG?
VNG testing is recommended for patients experiencing:
- Frequent dizziness or vertigo
- Unexplained imbalance or falls
- Persistent lightheadedness or nausea
- Symptoms following head trauma or inner ear infection
Identifying the underlying cause of these symptoms is crucial for targeted treatment, which may include vestibular therapy, medication, or, in some cases, surgical intervention.
Conditions VNG Can Help Diagnose
VNG (Videonystagmography) testing is a powerful tool for evaluating dizziness, vertigo, and balance problems. By analyzing eye movements in response to visual and inner ear stimuli, VNG helps your ENT team identify the underlying cause of your symptoms. Conditions that VNG can help diagnose include:
- Benign Paroxysmal Positional Vertigo (BPPV): A common cause of brief spinning sensations triggered by changes in head position.
- Vestibular Neuritis or Labyrinthitis: Inflammation of the inner ear that can cause sudden vertigo, imbalance, or nausea.
- Meniere’s Disease: A disorder of the inner ear characterized by episodes of vertigo, hearing loss, tinnitus (ringing in the ears), and a feeling of fullness.
- Bilateral Vestibular Loss: Reduced function in both inner ears, which can lead to chronic imbalance and difficulty walking in the dark.
- Central Vestibular Disorders: Conditions affecting the brain’s processing of balance information, such as stroke, multiple sclerosis, or other neurological disorders.
- Post-Concussion or Head Injury Imbalance: Dizziness or unsteadiness that persists after head trauma.
- Unexplained Falls or Lightheadedness: When other tests are inconclusive, VNG can help determine if the inner ear or vestibular system is involved.
By pinpointing the source of your dizziness or imbalance, VNG allows your doctor to develop a targeted treatment plan, whether it involves vestibular therapy, medication, or further diagnostic evaluation.
Schedule a Videonystagmography (VNG) Today
If dizziness, vertigo, or balance problems are affecting your daily life, don’t wait to get answers. At Anne Arundel ENT & Facial Plastic Surgery, our experienced team offers comprehensive VNG testing to pinpoint the cause of your symptoms and guide effective treatment. Schedule your appointment today and take the first step toward better balance and a more confident, steady life.
