title: Periodic alteration of null point in congenital nystagmus. Association with alternating gaze deviation and esotropia.
mesh_terms: D002648:Child; D004677:Encephalocele / Q000150:complications; D005403:Fixation, Ocular; D006257:Head; D006801:Humans; D008607:Intellectual Disability / Q000150:complications; D008297:Male; D009759:Nystagmus, Pathologic / Q000150:complications / Q000151:congenital* / Q000503:physiopathology; D010507:Periodicity; D011187:Posture