title: Importance of visual inputs quality for postural stability in strabismic children.
abstract: OBJECTIVE
  The first goal of the present study is to analyze the postural control in strabismic children in four different visual conditions (eyes open, eyes closed and monocular viewing with squint eye and non-squint eye). Secondly, we wish to explore the effect of strabismus surgery in postural control.
  
  
  METHODS
  Postural stability was recorded with a platform (TechnoConcept) in 23 strabismic children aged from 4.4 to 14.8 years old (mean age: 8.4 years); 12 of these children were also examined at least two months after strabismus surgery. We analyzed the surface, the length, and the mean speed of the Center of Pressure displacement (CdP), and we calculated the Romberg's Quotient (that is for each postural parameter the ratio between eyes closed relative to eyes open).
  
  
  RESULTS
  Strabismic children are significantly more stable when they can use their visual information to control their posture. Also, postural stability was better when the non-squint eye was viewing. For the first time, we observed the important role of vision (by calculating Romberg's Quotient) in strabismic children with binocular vision in comparison of strabismic children without binocular vision. Finally, we found that eye surgery improves postural stability.
  
  
  CONCLUSIONS
  Strabismic children use visual inputs to control their posture. Moreover, binocular vision plays an important role in postural control. Strabismus surgery improves postural stability.
  
  
  CONCLUSIONS
  Visual inputs from the non-squint eye and binocular vision are important to control stability.
authors.affiliation: UMR 1141, INSERM -Université Paris 7, Robert Debré University Hospital, 48 Boulevard Sérurier, Paris, France; Vestibular and Oculomotor Evaluation Unit, ENT Department, Robert Debré University Hospital, 48 Boulevard Sérurier, 75019 Paris, France. Electronic address: cynthia.lions.giraud@gmail.com.
authors.forename: Cynthia
authors.initials: C
authors.lastname: Lions
authors.affiliation: UMR 1141, INSERM -Université Paris 7, Robert Debré University Hospital, 48 Boulevard Sérurier, Paris, France; Vestibular and Oculomotor Evaluation Unit, ENT Department, Robert Debré University Hospital, 48 Boulevard Sérurier, 75019 Paris, France.
authors.forename: Lucile
authors.initials: L
authors.lastname: Colleville
authors.affiliation: Ophthalmology Unit, Robert Debré University Hospital, 48 Boulevard Sérurier, 75019 Paris, France.
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Bui-Quoc
authors.affiliation: UMR 1141, INSERM -Université Paris 7, Robert Debré University Hospital, 48 Boulevard Sérurier, Paris, France; Vestibular and Oculomotor Evaluation Unit, ENT Department, Robert Debré University Hospital, 48 Boulevard Sérurier, 75019 Paris, France.
authors.forename: Maria Pia
authors.initials: MP
authors.lastname: Bucci
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D006801:Humans; D011187:Posture; D013285:Strabismus / Q000503:physiopathology*; D015348:Vision, Binocular; D015349:Vision, Monocular; D014796:Visual Perception
keywords: Children; Posture; Romberg quotient; Squint eye; Strabismus; Surgery