title: [Variations in Posner's test for diagnosis of dissociated strabismus].
abstract: BACKGROUND
  A particular feature of dissociated strabismus is that the frequency of presentation and its magnitude is variable. It is common to find that in certain examinations is very obvious, and in others not so much. To facilitate exploration some maneuvers are described: Bielchowsky's maneuver, Bielchowsky's phenomenon and Posner test.
  
  
  OBJECTIVE
  to compare the presence and magnitude of the ocular movement in dissociated strabismus in Posner's Test using opaque versus translucent occluders.
  
  
  METHODS
  Prospective, transversal, descriptive study. Patients with diagnosis of were included. Posner's test in two ways: 1) With opaque occluders, and 2) with translucent occluders was perforned.
  
  
  RESULTS
  Ninety-five percent of the patients presented horizontal deviation. Posner's test with opaque occluder was positive in all cases (100%). Posner's test with translucent occluders was positive in 94% of the patients (p= 8). The magnitude of the ocular movement was significantly smaller using translucent occluders than opaque occluders. (p= 0.0001).
  
  
  CONCLUSIONS
  The Posner's test using opaque occluders was more efective to demonstrate clearly and precisely the size of the ocular movement in dissociated strabismus.
authors: Clínica de Oftalmología Pediátrica y Estrabismo. Servicio de Oftalmología. Hospital General de México, O.D., Mexico.
authors: José Manuel
authors: JM
authors: González-González
authors: Clínica de Oftalmología Pediátrica y Estrabismo. Servicio de Oftalmología. Hospital General de México, O.D., Mexico. mearroyo1@gmail.com.
authors: María Estela
authors: ME
authors: Arroyo-Yllanes
authors: Clínica de Oftalmología Pediátrica y Estrabismo. Servicio de Oftalmología. Hospital General de México, O.D., Mexico.
authors: José Fernando
authors: JF
authors: Pérez-Pérez
mesh_terms: D000293:Adolescent; D000328:Adult; D001288:Attention; D002648:Child; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D053483:Eye Movement Measurements; D005133:Eye Movements / Q000502:physiology; D005260:Female; D005403:Fixation, Ocular / Q000502:physiology; D006801:Humans; D008029:Lighting; D008297:Male; D009184:Mydriatics; D011446:Prospective Studies; D013285:Strabismus / Q000175:diagnosis* / Q000503:physiopathology; D015349:Vision, Monocular / Q000502:physiology; D055815:Young Adult
chemical_list: D009184:Mydriatics
keywords: Dissociate strabismus; Posner's test; estrabismo disociado; maniobra de Posner; oclusores opacos; oclusores translúcidos; opaque occluder; translucent occluder