Déviation conjuguée

The Déviation conjuguée (Fr. " united deviation" ), after the descriptor Jean Louis Prévost also referred to as Prévost character, is a paroxysmal, involuntary and can not be influenced shift of focus in pathological conditions of the frontal brain. There is a movement in unison both eyes ( version ) in one and the same direction without the occurrence of strabismus deviation. Cause is a temporary or permanent dysfunction of the frontal eye field. Damage to this brain area as in stroke lead to an eye movement to the side of the lesion ( 'herd view "). An equally involuntary rotation of the head in the same direction may occur. In partial-onset seizures in the frontal brain area, however, the shift of focus occurs to the healthy side. The paretic Déviation conjuguée ( in infarction ) can be overcome momentarily by rapid passive head turning ( trigger the vestibulo-ocular reflex ). Even with damage to the bridge ( pons), a deviation views occur, it is then directed to the opposite side of the lesion and not be overcome by passive head movements.