Reportage on an ENT doctor in Nice, France, treating patients suffering from dizziness. A 65-year old patient during a videonystagmoscopy test. Using a videonystagmoscopy mask that films the eye using infrared, an analysis of the stability of eye movement is carried out, looking for a nystagmus. If the test reveals unstable eye movement in various conditions, this will provide vital information on the origin of the symptoms of dizziness.