What Are the VNG Tests and What Are They Used For?

by | Jul 29, 2019 | Health


Latest Articles



VNG in Orlando helps a doctor diagnose the cause of a patient’s vertigo or dizziness. Balance problems, in general, are most common in people over 70. They can range in severity from a few second’s disorientation when getting up or changing position to frequently falling and having trouble walking. A person’s sense of balance depends on the brain, eyes, inner ear, and soles of the feet working together.

What does VNG in Orlando involve?
VNG stands for “videonystagmography,” and it is a series of tests designed to help the doctor diagnose the cause of a patient’s dizziness. The patient will wear video goggles that will let the doctor observe and record the movement of their eyes as involuntary eye movements are associated with the brain and inner ear. The doctor will perform the tests to see how well the patient’s eyes and inner ear work together. There are several tests, including ocular mobility, rotational chair, positional nystagmus and caloric testing.

Ocular mobility test: During the ocular mobility test, the patient will be asked to track an image with, like a moving light, with their eyes. The image may stay still, move slowly, or jump around. Difficulty with this part of the test could indicate a problem with the inner ear or central nervous system.

Rotational chair test: In the rotational chair test, the patient will try to follow an object with their eyes while sitting in a rotating chair.

Positional nystagmus test: In the positional nystagmus test, the patient will be asked to assume different positions with their head and body, and the doctor will check for abnormal eye movements as they do so.

Caloric test: Caloric testing determines how well the inner ear responds to stimuli like changes in temperature. The doctor will check the movement of the patient’s eyes while stimulating their inner ear with hot or cold air or water.

This group of tests can take as little as 45 minutes.

Related Articles