Mouvements oculaires anormaux : aide au diagnostic étiologique/topographique en neurologie

Acquired neurological nystagmus and other abnormal eye movements may be valuable diagnostic tools. The identification of abnormal eye movement is based on close observation of the slow or quick phase, direction, monocular or binocular characteristic, frequency, regularity and of the general pathological context. In case of precise and correct identification, it can be a challenging tool to establish a topology, etiology or prognosis of some neurological diseases. Here, we provide a “practical” approach, with the objective of highlighting for neurologists the importance of abnormal eye movement observation in order to improve the subtlety of clinical diagnosis.