[Oculomotor disorders associated with Arnold-Chiari malformations (author's transl)].

Oculographic examinations were conducted in 24 cases of Arnold-Chiari malformation. Disorders in vertical eye movements with a spontaneous vertical nystagmus were frequently observed, together with disturbances in visual tracking. There was no case of paralysis of lateral eye movements, but an adduction internuclear ophthalmoplegia might be present. Though these anomalies are not specific, they differ for example from those usually observed in multiple sclerosis, which is often a differential diagnosis in such cases. Oculography therefore may be of particular value.