title: Influence of head posture on the visual acuity of children with nystagmus.
abstract: OBJECTIVE
  Evaluate the relationship between the postural alignment of the head and possible interference in the view of children.
  
  
  METHODS
  We evaluated 11 children between 2 and 7 years of age of both sexes, with the visually impaired, who had nystagmus and head lock position. The test Lea Grating Acuity Test® was used to collect measurements of visual acuity. This applied on two occasions: with and without postural alignment of the head. For reliability of the postural alignment of the head, the slopes were measured by Fisiologic® software.
  
  
  RESULTS
  The children had a poorer performance after physiological postural alignment. This poor performance is possible due to loss of position lock nystagmus to gain postural alignment, said to be ideal. Postural compensations were observed, and sharply increased eyestrain.
  
  
  CONCLUSIONS
  The pursuit of traditional postural alignment affect the visual response of children with visual impairments.
authors: Ambulatório de Estimulação Visual Precoce, Universidade Federal de São Paulo, São Paulo, SP, Brazil.
authors: Ana Carla Ramos Vieira da
authors: AC
authors: Costa
authors: Universidade Federal de São Paulo, São Paulo, SP, Brazil.
authors: Márcia Caires Bestilleiro
authors: MC
authors: Lopes
authors: Setor de Baixa Visão e Reabilitação Visual, Universidade Federal de São Paulo, São Paulo, SP, Brazil.
authors: Célia Regina
authors: CR
authors: Nakanami
mesh_terms: D002648:Child; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D005260:Female; D006257:Head; D006801:Humans; D008297:Male; D009759:Nystagmus, Pathologic / Q000503:physiopathology*; D009760:Nystagmus, Physiologic / Q000502:physiology; D011187:Posture / Q000502:physiology*; D011446:Prospective Studies; D014792:Visual Acuity / Q000502:physiology*