The VNG test analyses the eyes in detail to study whether any anomalous movements are present. The control of eye movements are also studied whilst the patient undertakes several visual tasks. This helps to determine whether your balance problems are related to a central (brain) vestibular disorder or a peripheral balance organ (labyrinth) problem.
This test is conducted by the Vestibular Scientist in a room which can be completely darkened. Focusing on an object allows the brain to suppress and therefore reduce any abnormal eye movements. It is therefore not unusual to observe anomalous eye movements in the dark which disappear when the lights are switched on. You will be required to wear a set of goggles incorporating infrared-sensitive video cameras, which digitally record your eye movements onto a computer for subsequent analysis. You will be asked to focus your eyes on a red light on a bar ahead of you. You must co-operate and keep your head still while following various movements of the red light with your eyes as closely as possible. This test takes about 20 minutes.
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Dr Gerald Brookes is regularly consulted by the media for his expertise. He has been interviewed by the Daily Mail, featured on Channel 4's Embarassing Bodies, looked after The X-Factor contestants and recently, appeared on BBC Radio 2 with Chris Evans.
Media: Channel 4
Adele was experiencing dizziness and balance problems so severe that she could barely function. In desperation, after consulting her GP to no avail, she got in touch with Channel 4’s Embarrassing Bodies team. The show then contacted Dr Gerald Brookes, who was able to diagnose her rare condition as Basilar Migraine.
Catherine Eade was having dizzy spells and balance problems. When inexplicably she started suffering memory loss too, she consulted Dr Gerald Brookes at The Harley Street ENT Clinic who correctly diagnosed her problem as benign paroxysmal positional vertigo (BPPV).
The Harley Street ENT Clinic looked after The X-Factor TV show contestants for many seasons. At the end of the 2010 season, Dr Gerald Brookes was interviewed by Nicky Broyd of Boots WebMD on the perils of high pressure performing.