Benefit of bi-ocular visual stimulation for postural control in children with strabismus.

Vision is important for postural control as is shown by the Romberg quotient (RQ): with eyes closed, postural instability increases relative to eyes open (RQ = 2). Yet while fixating at far distance, postural stability is similar with eyes open and eyes closed (RQ = 1). Postural stability can be bet...

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Autores principales:	Chrystal Gaertner, Charlotte Creux, Marie-Andrée Espinasse-Berrod, Christophe Orssaud, Jean-Louis Dufier, Zoï Kapoula
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/170208b5aa924381b14b5a2b65c5bfd5
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spelling	oai:doaj.org-article:170208b5aa924381b14b5a2b65c5bfd52021-11-18T07:50:59ZBenefit of bi-ocular visual stimulation for postural control in children with strabismus.1932-620310.1371/journal.pone.0060341https://doaj.org/article/170208b5aa924381b14b5a2b65c5bfd52013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23565228/?tool=EBIhttps://doaj.org/toc/1932-6203Vision is important for postural control as is shown by the Romberg quotient (RQ): with eyes closed, postural instability increases relative to eyes open (RQ = 2). Yet while fixating at far distance, postural stability is similar with eyes open and eyes closed (RQ = 1). Postural stability can be better with both eyes viewing than one eye, but such effect is not consistent among healthy subjects. The first goal of the study is to test the RQ as a function of distance for children with convergent versus divergent strabismus. The second goal is to test whether vision from two eyes relative to vision from one eye provides better postural stability. Thirteen children with divergent strabismus and eleven with convergent strabismus participated in this study. Posturtography was done with the Techno concept device. Experiment 1, four conditions: fixation at 40 cm and at 200 cm both with eyes open and eyes covered (evaluation of RQ). Experiment 2, six conditions: fixation at 40 cm and at 200 cm, with both eyes viewing or under monocular vision (dominant and non-dominant eye). For convergent strabismus, the groups mean value of RQ was 1.3 at near and 0.94 at far distance; for divergent, it was 1.06 at near and 1.68 at far. For all children, the surface of body sway was significantly smaller under both eyes viewing than monocular viewing (either eye). Increased RQ value at near for convergent and at far for divergent strabismus is attributed to the influence of the default strabismus angle and to better use of ocular motor signals. Vision with the two eyes improves postural control for both viewing distances and for both types of strabismus. Such benefit can be due to complementary mechanisms: larger visual field, better quality of fixation and vergence angle due to the use of visual inputs from both eyes.Chrystal GaertnerCharlotte CreuxMarie-Andrée Espinasse-BerrodChristophe OrssaudJean-Louis DufierZoï KapoulaPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 4, p e60341 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Chrystal Gaertner Charlotte Creux Marie-Andrée Espinasse-Berrod Christophe Orssaud Jean-Louis Dufier Zoï Kapoula Benefit of bi-ocular visual stimulation for postural control in children with strabismus.
description	Vision is important for postural control as is shown by the Romberg quotient (RQ): with eyes closed, postural instability increases relative to eyes open (RQ = 2). Yet while fixating at far distance, postural stability is similar with eyes open and eyes closed (RQ = 1). Postural stability can be better with both eyes viewing than one eye, but such effect is not consistent among healthy subjects. The first goal of the study is to test the RQ as a function of distance for children with convergent versus divergent strabismus. The second goal is to test whether vision from two eyes relative to vision from one eye provides better postural stability. Thirteen children with divergent strabismus and eleven with convergent strabismus participated in this study. Posturtography was done with the Techno concept device. Experiment 1, four conditions: fixation at 40 cm and at 200 cm both with eyes open and eyes covered (evaluation of RQ). Experiment 2, six conditions: fixation at 40 cm and at 200 cm, with both eyes viewing or under monocular vision (dominant and non-dominant eye). For convergent strabismus, the groups mean value of RQ was 1.3 at near and 0.94 at far distance; for divergent, it was 1.06 at near and 1.68 at far. For all children, the surface of body sway was significantly smaller under both eyes viewing than monocular viewing (either eye). Increased RQ value at near for convergent and at far for divergent strabismus is attributed to the influence of the default strabismus angle and to better use of ocular motor signals. Vision with the two eyes improves postural control for both viewing distances and for both types of strabismus. Such benefit can be due to complementary mechanisms: larger visual field, better quality of fixation and vergence angle due to the use of visual inputs from both eyes.
format	article
author	Chrystal Gaertner Charlotte Creux Marie-Andrée Espinasse-Berrod Christophe Orssaud Jean-Louis Dufier Zoï Kapoula
author_facet	Chrystal Gaertner Charlotte Creux Marie-Andrée Espinasse-Berrod Christophe Orssaud Jean-Louis Dufier Zoï Kapoula
author_sort	Chrystal Gaertner
title	Benefit of bi-ocular visual stimulation for postural control in children with strabismus.
title_short	Benefit of bi-ocular visual stimulation for postural control in children with strabismus.
title_full	Benefit of bi-ocular visual stimulation for postural control in children with strabismus.
title_fullStr	Benefit of bi-ocular visual stimulation for postural control in children with strabismus.
title_full_unstemmed	Benefit of bi-ocular visual stimulation for postural control in children with strabismus.
title_sort	benefit of bi-ocular visual stimulation for postural control in children with strabismus.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/170208b5aa924381b14b5a2b65c5bfd5
work_keys_str_mv	AT chrystalgaertner benefitofbiocularvisualstimulationforposturalcontrolinchildrenwithstrabismus AT charlottecreux benefitofbiocularvisualstimulationforposturalcontrolinchildrenwithstrabismus AT marieandreeespinasseberrod benefitofbiocularvisualstimulationforposturalcontrolinchildrenwithstrabismus AT christopheorssaud benefitofbiocularvisualstimulationforposturalcontrolinchildrenwithstrabismus AT jeanlouisdufier benefitofbiocularvisualstimulationforposturalcontrolinchildrenwithstrabismus AT zoikapoula benefitofbiocularvisualstimulationforposturalcontrolinchildrenwithstrabismus
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Benefit of bi-ocular visual stimulation for postural control in children with strabismus.

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