Videonystagmography, or VNG, is a balance test that records eye movements during a vertigo workup. Dr. Prateek Porwal explains this term because eye-movement patterns often help separate BPPV, vestibular weakness, and other dizziness causes more clearly.

Videonystagmography, or VNG, records eye movements during balance testing. Because the eyes and inner ear are linked, eye movement patterns can reveal vestibular clues.

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What videonystagmography means

Videonystagmography, or VNG, records eye movements during balance testing. Because the eyes and inner ear are linked, eye movement patterns can reveal vestibular clues. The term is useful because vertigo is a symptom, not one single disease. A clear word like videonystagmography helps connect the symptom story with the examination and the right next test.

For patients, the main point is not to memorize the anatomy. The main point is to know whether the word points toward BPPV, an inner-ear balance disorder, a hearing-and-balance disorder, or a warning sign that needs urgent review.

Why it matters in vertigo care

VNG can support the diagnosis when vertigo is recurrent, unclear, mixed with imbalance or not behaving like simple BPPV. This is why a short glossary definition is not enough. The same dizzy feeling can come from loose ear crystals, vestibular nerve weakness, migraine biology, blood pressure problems, medicine effects, anxiety-related dizziness or central neurological disease.

When videonystagmography is relevant, the doctor still has to match it with timing, triggers, hearing symptoms, neurological signs and examination findings.

How I use this finding in clinic

In clinic, I use VNG as one part of the decision, not as a replacement for history and examination. I also check whether the pattern fits the patient’s age, medicines, fall risk, migraine history, ear symptoms and previous vertigo attacks.

This approach reduces two common mistakes: calling every dizziness attack BPPV, or treating every vertigo patient with only tablets without finding the actual mechanism.

What patients should do next

The test may include eye tracking, positional testing and warm or cool air or water in the ear depending on the protocol. VNG is most useful when the result will change the treatment plan, rehab plan or need for further tests.

Bring details about the first attack, attack duration, head-position triggers, nausea, hearing change, tinnitus, headache, neck limitations, recent infection, head injury and current medicines. These details often matter more than a single scan or blood test.

For recurrent vertigo, unclear imbalance, or dizziness that needs test-based vestibular evaluation: Call or WhatsApp Prime ENT Center, Hardoi at +91 7393062200 for non-emergency consultation.

Medical disclaimer: This glossary entry is for patient education only. New weakness, double vision, slurred speech, severe headache, fainting, chest pain, or inability to walk needs urgent medical care first.

Reference: Vestibular Disorders Association overview of vestibular testing.

This glossary page is for patient education only. It does not replace examination by a qualified doctor, especially when dizziness is new, severe, recurrent or linked with neurological symptoms.