What is Videonystagmography (VNG)?
Videonystagmography (VNG) is a medical procedure that uses video recordings to monitor and analyze the movements of the eyes during various tasks. It is used to diagnose and evaluate various conditions related to the vestibular system, which controls balance and orientation in the body.
The vestibular system includes several organs and structures located in the inner ear and brain, which work together to maintain balance and coordination. When there is a problem with this system, it can result in symptoms such as dizziness, vertigo, and difficulty walking or standing.
During a VNG test, a series of small cameras are used to record the movements of the eyes as the patient performs various tasks. These tasks may include following a moving object with the eyes, moving the head in different directions, or standing on a platform that moves back and forth.
The recorded images are then analyzed by a computer program, which measures the speed and accuracy of the eye movements and provides information about the function of the vestibular system. The results of the test can help doctors diagnose and evaluate conditions such as vestibular neuritis, Meniere's disease, and benign paroxysmal positional vertigo (BPPV).
VNG is a non-invasive and safe procedure that is typically performed in a doctor's office or clinic. The test is generally well-tolerated, although some patients may experience mild discomfort or dizziness during certain parts of the procedure.
Overall, VNG is a valuable diagnostic tool that can help doctors identify and treat a wide range of vestibular disorders. By providing detailed information about the function of the inner ear and brain, VNG can help patients get the care they need to manage their symptoms and improve their quality of life.
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