title: Horizontal pursuit defect nystagmus.
mesh_terms: D000293:Adolescent; D001932:Brain Neoplasms / Q000150:complications*; D001933:Brain Stem; D002528:Cerebellar Neoplasms / Q000150:complications; D003884:Dermoid Cyst / Q000150:complications; D005133:Eye Movements; D005260:Female; D006222:Hamartoma / Q000150:complications; D006801:Humans; D009759:Nystagmus, Pathologic / Q000209:etiology* / Q000503:physiopathology; D012018:Reflex; D014722:Vestibule, Labyrinth / Q000503:physiopathology