Comparative analysis of peripheral corneal geometry in health and Keratoconus

OBJECTIVES:: To describe and compare corneal peripheral angles in normal and keratoconic eyes, to gain a better understanding of the topography of the periphery of the cornea in keratoconus and assist practitioners in the selection and fitting of large diameter contact lenses. METHODS:: Eighty-eight...

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Autores: Mas Aixalà, Enric, Gispets Parcerisas, Joan|||0000-0002-4671-6931, Lupón Bas, Núria|||0000-0002-4489-286X, Cardona Torradeflot, Genís|||0000-0002-4770-8992
Tipo de recurso: artículo
Fecha de publicación:2017
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/106199
Acceso en línea:https://hdl.handle.net/2117/106199
https://dx.doi.org/10.1097/ICL.0000000000000404
Access Level:acceso abierto
Palabra clave:Keratoconus
Cornea
Contact lenses
Còrnia -- Malalties
Lents de contacte
Àrees temàtiques de la UPC::Ciències de la visió::Contactologia
Àrees temàtiques de la UPC::Ciències de la salut::Medicina::Oftalmologia
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spelling Comparative analysis of peripheral corneal geometry in health and KeratoconusMas Aixalà, EnricGispets Parcerisas, Joan|||0000-0002-4671-6931Lupón Bas, Núria|||0000-0002-4489-286XCardona Torradeflot, Genís|||0000-0002-4770-8992KeratoconusCorneaContact lensesCòrnia -- MalaltiesLents de contacteÀrees temàtiques de la UPC::Ciències de la visió::ContactologiaÀrees temàtiques de la UPC::Ciències de la salut::Medicina::OftalmologiaOBJECTIVES:: To describe and compare corneal peripheral angles in normal and keratoconic eyes, to gain a better understanding of the topography of the periphery of the cornea in keratoconus and assist practitioners in the selection and fitting of large diameter contact lenses. METHODS:: Eighty-eight eyes were included in the study, divided into three groups: healthy (A0, 28 eyes), keratoconus at stage I according to the Amsler-Krumeich classification (AI, 33 eyes) and keratoconus at stages II to IV (AII, 27 eyes). The Pentacam Scheimpflug system was used to manually measure the corneal peripheral angles corresponding to a chord length range between 8.6 and 12.6 mm at 8 different peripheral locations. RESULTS:: The peripheral angle was influenced by ocular condition and by the peripheral location, with no interaction effect between both factors. Statistically significant differences were found in mean corneal peripheral angles between groups A0 (30.84°±2.33°) and AI (31.63°±2.02°) (P=0.001) and between A0 and AII (31.37°±2.11°) (P=0.030). The differences between AI and AII were not significant. In all eyes, the largest and smallest peripheral angles were found at the temporal inferior and temporal superior locations, respectively, with a mean difference between largest and smallest of 3.37°±1.42° in healthy eyes and 2.96°±1.54° in keratoconus (AI+AII). CONCLUSION:: Clinically insignificant differences were found in peripheral angles between keratoconus and healthy eyes, giving support to the use of large diameter, intralimbal contact lenses with peripheral designs, and resting on the same corneal region, as those fitted on normal corneas.20172017-06-1420172017-07-06journal articlehttp://purl.org/coar/resource_type/c_6501AOhttp://purl.org/coar/version/c_b1a7d7d4d402bcceinfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/106199https://dx.doi.org/10.1097/ICL.0000000000000404reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivs 3.0 Spainhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/1061992026-05-27T15:37:01Z
dc.title.none.fl_str_mv Comparative analysis of peripheral corneal geometry in health and Keratoconus
title Comparative analysis of peripheral corneal geometry in health and Keratoconus
spellingShingle Comparative analysis of peripheral corneal geometry in health and Keratoconus
Mas Aixalà, Enric
Keratoconus
Cornea
Contact lenses
Còrnia -- Malalties
Lents de contacte
Àrees temàtiques de la UPC::Ciències de la visió::Contactologia
Àrees temàtiques de la UPC::Ciències de la salut::Medicina::Oftalmologia
title_short Comparative analysis of peripheral corneal geometry in health and Keratoconus
title_full Comparative analysis of peripheral corneal geometry in health and Keratoconus
title_fullStr Comparative analysis of peripheral corneal geometry in health and Keratoconus
title_full_unstemmed Comparative analysis of peripheral corneal geometry in health and Keratoconus
title_sort Comparative analysis of peripheral corneal geometry in health and Keratoconus
dc.creator.none.fl_str_mv Mas Aixalà, Enric
Gispets Parcerisas, Joan|||0000-0002-4671-6931
Lupón Bas, Núria|||0000-0002-4489-286X
Cardona Torradeflot, Genís|||0000-0002-4770-8992
author Mas Aixalà, Enric
author_facet Mas Aixalà, Enric
Gispets Parcerisas, Joan|||0000-0002-4671-6931
Lupón Bas, Núria|||0000-0002-4489-286X
Cardona Torradeflot, Genís|||0000-0002-4770-8992
author_role author
author2 Gispets Parcerisas, Joan|||0000-0002-4671-6931
Lupón Bas, Núria|||0000-0002-4489-286X
Cardona Torradeflot, Genís|||0000-0002-4770-8992
author2_role author
author
author
dc.subject.none.fl_str_mv Keratoconus
Cornea
Contact lenses
Còrnia -- Malalties
Lents de contacte
Àrees temàtiques de la UPC::Ciències de la visió::Contactologia
Àrees temàtiques de la UPC::Ciències de la salut::Medicina::Oftalmologia
topic Keratoconus
Cornea
Contact lenses
Còrnia -- Malalties
Lents de contacte
Àrees temàtiques de la UPC::Ciències de la visió::Contactologia
Àrees temàtiques de la UPC::Ciències de la salut::Medicina::Oftalmologia
description OBJECTIVES:: To describe and compare corneal peripheral angles in normal and keratoconic eyes, to gain a better understanding of the topography of the periphery of the cornea in keratoconus and assist practitioners in the selection and fitting of large diameter contact lenses. METHODS:: Eighty-eight eyes were included in the study, divided into three groups: healthy (A0, 28 eyes), keratoconus at stage I according to the Amsler-Krumeich classification (AI, 33 eyes) and keratoconus at stages II to IV (AII, 27 eyes). The Pentacam Scheimpflug system was used to manually measure the corneal peripheral angles corresponding to a chord length range between 8.6 and 12.6 mm at 8 different peripheral locations. RESULTS:: The peripheral angle was influenced by ocular condition and by the peripheral location, with no interaction effect between both factors. Statistically significant differences were found in mean corneal peripheral angles between groups A0 (30.84°±2.33°) and AI (31.63°±2.02°) (P=0.001) and between A0 and AII (31.37°±2.11°) (P=0.030). The differences between AI and AII were not significant. In all eyes, the largest and smallest peripheral angles were found at the temporal inferior and temporal superior locations, respectively, with a mean difference between largest and smallest of 3.37°±1.42° in healthy eyes and 2.96°±1.54° in keratoconus (AI+AII). CONCLUSION:: Clinically insignificant differences were found in peripheral angles between keratoconus and healthy eyes, giving support to the use of large diameter, intralimbal contact lenses with peripheral designs, and resting on the same corneal region, as those fitted on normal corneas.
publishDate 2017
dc.date.none.fl_str_mv 2017
2017-06-14
2017
2017-07-06
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AO
http://purl.org/coar/version/c_b1a7d7d4d402bcce
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/106199
https://dx.doi.org/10.1097/ICL.0000000000000404
url https://hdl.handle.net/2117/106199
https://dx.doi.org/10.1097/ICL.0000000000000404
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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