Infantile nystagmus syndrome: Broadening the high-foveation-quality field with contact lenses

Infantile nystagmus syndrome: Broadening the high-foveation-quality field with contact lenses

Giovanni Taibbi1,4,5, Zhong I Wang1,3, Louis F Dell’Osso1–31The Daroff-Dell’Osso Ocular Motility Laboratory, Louis Stokes Cleveland Department of Veterans Affairs Medical Center and CASE Medical School; 2Department of Neurology; 3Department of Biomedical Eng...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Giovanni Taibbi, Zhong I Wang, Louis F Dell’Osso
Formato: article
Lenguaje:EN
Publicado: Dove Medical Press 2008
Materias:
Ophthalmology
RE1-994
Acceso en línea:https://doaj.org/article/5353ed2b8f5341e092f15a2febadc890
Etiquetas: Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
id oai:doaj.org-article:5353ed2b8f5341e092f15a2febadc890
record_format dspace
spelling oai:doaj.org-article:5353ed2b8f5341e092f15a2febadc8902021-12-02T04:56:22ZInfantile nystagmus syndrome: Broadening the high-foveation-quality field with contact lenses1177-54671177-5483https://doaj.org/article/5353ed2b8f5341e092f15a2febadc8902008-10-01T00:00:00Zhttp://www.dovepress.com/infantile-nystagmus-syndrome-broadening-the-high-foveation-quality-fie-a2365https://doaj.org/toc/1177-5467https://doaj.org/toc/1177-5483Giovanni Taibbi1,4,5, Zhong I Wang1,3, Louis F Dell’Osso1–31The Daroff-Dell’Osso Ocular Motility Laboratory, Louis Stokes Cleveland Department of Veterans Affairs Medical Center and CASE Medical School; 2Department of Neurology; 3Department of Biomedical Engineering, Case Western Reserve University and University Hospitals Case Medical Center, Cleveland, OH, USA; 4Pediatric Ophthalmology and Strabismus Unit, San Paolo Hospital, Milan, Italy; 5University of Milan, Milan, ItalyAbstract: We investigated the effects of contact lenses in broadening and improving the high-foveation-quality field in a subject with infantile nystagmus syndrome (INS). A high-speed, digitized video system was used for the eye-movement recording. The subject was asked to fixate a far target at different horizontal gaze angles with contact lenses inserted. Data from the subject while fixating at far without refractive correction and at near (at a convergence angle of 60 PD), were used for comparison. The eXpanded Nystagmus Acuity Function (NAFX) was used to evaluate the foveation quality at each gaze angle. Contact lenses broadened the highfoveation-quality range of gaze angles in this subject. The broadening was comparable to that achieved during 60 PD of convergence although the NAFX values were lower. Contact lenses allowed the subject to see “more” (he had a wider range of high-foveation-quality gaze angles) and “better” (he had improved foveation at each gaze angle). Instead of being contraindicated by INS, contact lenses emerge as a potentially important therapeutic option. Contact lenses employ afferent feedback via the ophthalmic division of the V cranial nerve to damp INS slow phases over a broadened range of gaze angles. This supports the proprioceptive hypothesis of INS improvement.Keywords: contact lenses, infantile nystagmus, visual function Giovanni TaibbiZhong I WangLouis F Dell’OssoDove Medical PressarticleOphthalmologyRE1-994ENClinical Ophthalmology, Vol 2008, Iss Issue 3, Pp 585-589 (2008)
institution DOAJ
collection DOAJ
language EN
topic Ophthalmology
RE1-994
spellingShingle Ophthalmology
RE1-994
Giovanni Taibbi
Zhong I Wang
Louis F Dell’Osso
Infantile nystagmus syndrome: Broadening the high-foveation-quality field with contact lenses
description Giovanni Taibbi1,4,5, Zhong I Wang1,3, Louis F Dell’Osso1–31The Daroff-Dell’Osso Ocular Motility Laboratory, Louis Stokes Cleveland Department of Veterans Affairs Medical Center and CASE Medical School; 2Department of Neurology; 3Department of Biomedical Engineering, Case Western Reserve University and University Hospitals Case Medical Center, Cleveland, OH, USA; 4Pediatric Ophthalmology and Strabismus Unit, San Paolo Hospital, Milan, Italy; 5University of Milan, Milan, ItalyAbstract: We investigated the effects of contact lenses in broadening and improving the high-foveation-quality field in a subject with infantile nystagmus syndrome (INS). A high-speed, digitized video system was used for the eye-movement recording. The subject was asked to fixate a far target at different horizontal gaze angles with contact lenses inserted. Data from the subject while fixating at far without refractive correction and at near (at a convergence angle of 60 PD), were used for comparison. The eXpanded Nystagmus Acuity Function (NAFX) was used to evaluate the foveation quality at each gaze angle. Contact lenses broadened the highfoveation-quality range of gaze angles in this subject. The broadening was comparable to that achieved during 60 PD of convergence although the NAFX values were lower. Contact lenses allowed the subject to see “more” (he had a wider range of high-foveation-quality gaze angles) and “better” (he had improved foveation at each gaze angle). Instead of being contraindicated by INS, contact lenses emerge as a potentially important therapeutic option. Contact lenses employ afferent feedback via the ophthalmic division of the V cranial nerve to damp INS slow phases over a broadened range of gaze angles. This supports the proprioceptive hypothesis of INS improvement.Keywords: contact lenses, infantile nystagmus, visual function
format article
author Giovanni Taibbi
Zhong I Wang
Louis F Dell’Osso
author_facet Giovanni Taibbi
Zhong I Wang
Louis F Dell’Osso
author_sort Giovanni Taibbi
title Infantile nystagmus syndrome: Broadening the high-foveation-quality field with contact lenses
title_short Infantile nystagmus syndrome: Broadening the high-foveation-quality field with contact lenses
title_full Infantile nystagmus syndrome: Broadening the high-foveation-quality field with contact lenses
title_fullStr Infantile nystagmus syndrome: Broadening the high-foveation-quality field with contact lenses
title_full_unstemmed Infantile nystagmus syndrome: Broadening the high-foveation-quality field with contact lenses
title_sort infantile nystagmus syndrome: broadening the high-foveation-quality field with contact lenses
publisher Dove Medical Press
publishDate 2008
url https://doaj.org/article/5353ed2b8f5341e092f15a2febadc890
work_keys_str_mv AT giovannitaibbi infantilenystagmussyndromebroadeningthehighfoveationqualityfieldwithcontactlenses
AT zhongiwang infantilenystagmussyndromebroadeningthehighfoveationqualityfieldwithcontactlenses
AT louisfdellamprsquoosso infantilenystagmussyndromebroadeningthehighfoveationqualityfieldwithcontactlenses
_version_ 1718400948895744000

Ejemplares similares