Understanding the Importance of VNG Nystagmus Tests for Diagnosing Balance and Eye Movement Disorders

Audiologist doing VNG Nystagmus test

Nystagmus is a vision condition characterized by repetitive, involuntary eye movements. These movements can follow patterns of side-to-side, up-and-down, or circular motions, making it challenging to focus on objects. Here’s what you need to know:

1. Types of Nystagmus:

   • Congenital Nystagmus (Infantile Nystagmus): Develops around three months after birth and involves slow and rapid side-to-side eye movements. It can be spontaneous or inherited.

   • Acquired Nystagmus: Develops later in life and is often associated with central nervous system issues, metabolic disorders, or drug/alcohol toxicity.

2. Symptoms:

   • Involuntary or rapid eye movements in one or both eyes.

   • Other symptoms may include vertigo, dizziness, blurry vision, nighttime vision problems, and trouble with balance and coordination.

3. Diagnosis:

   • Audiologists perform a comprehensive eye exam, VNG, assess eye movement stability, and evaluate the ability to focus on objects.

   • Additional tests may include visual acuity screening, slit-lamp examination, and brain imaging (MRI).

   • An ear exam and neurological assessment are also part of the diagnostic process.

4. When to Seek Medical Advice:

   • If nystagmus develops spontaneously, especially following a head injury, seek immediate medical attention.

Feel free to ask if you need further information! 😊