Inclusion Criteria:  Young Athletes from AS Monaco Football Academy referred by AS Monaco Medical Team to perform a video-oculography (Eye-Tracking) examination as part of routine care. covered by a health insurance system volunteer, able to give free, informed and written consent. For minors: whose holder of parental authority has given their written consent to participate following the information given by investigator.  Exclusion Criteria:  General anaesthesia within 3 months. Head trauma within 3 months Neurological, ophthalmological or general pathology preventing the realization of a video-oculography examination. Oculomotor abnormality detectable on clinical examination by the neurologist prescribing the standard video-oculography examination.