title: Pearls: nystagmus.
abstract: Nystagmus is a spontaneous, repetitive movement of the eyes caused by slow eye drifts. Clinical evaluation of nystagmus requires familiarity with the functional classes of eye movements, the types of acquired nystagmus and a differential diagnosis for each type, and the ability to differentiate acquired nystagmus from infantile nystagmus and saccadic intrusions.
authors.affiliation: Departments of Neurology and Ophthalmology, The Mount Sinai Medical Center, New York, New York, USA. janet.rucker@mssm.edu
authors.forename: Janet C
authors.initials: JC
authors.lastname: Rucker
mesh_terms: D003937:Diagnosis, Differential; D006801:Humans; D009460:Neurologic Examination / Q000379:methods; D009759:Nystagmus, Pathologic / Q000175:diagnosis* / Q000209:etiology / Q000473:pathology