A pilot study on the influence of biomechanical properties of the cornea on short-term response to myopic corneal refractive therapy

Detalhes bibliográficos
Autor(a) principal: González-Méijome, José Manuel
Data de Publicação: 2008
Outros Autores: Villa-Collar, César, Queirós, A., Jorge, Jorge, Parafita, Manuel A.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/8407
Resumo: The authors state that they do not have any proprietary interest in the products named in this article.
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spelling A pilot study on the influence of biomechanical properties of the cornea on short-term response to myopic corneal refractive therapyCorneal refractive therapyCorneal thicknessCorneal biomechanical propertiesOrthokeratologyCorneal hysteresisThe authors state that they do not have any proprietary interest in the products named in this article.To study the short-term corneal response to corneal refractive therapy for myopia and correlate it with corneal biomechanical properties as measured with the ocular response analyzer. METHODS: Eight eyes from 8 young subjects were fitted with a reverse geometry contact lens, attempting a myopic correction of -4.00 D. Corneal resistance factor and corneal hysteresis (CH) were measured before contact lens fitting with the ocular response analyzer. These parameters were correlated with the degree of change in apical curvature, simulated keratometry, and central corneal thickness after 3 hours of contact lens wear (effect) and 3 hours after lens removal (recovery). RESULTS: There was a trend toward a faster effect and faster recovery of the orthokeratologic effect for corneas with less resistance in terms of biomechanical properties. Corneal resistance factor did not correlate significantly, however, with any of the topographic and pachymetric parameters. Conversely, CH was significantly correlated with changes in steep keratometry (0.758; P = 0.029) and central corneal thickness (0.755; P = 0.030) during lens wear and with changes in steep keratometry (-0.835; P = 0.010) during recovery. Overall, higher values of CH meant slower effect and recovery of the orthokeratologic effect. CONCLUSIONS: Short-term response of human cornea to corneal refractive therapy is correlated with the biomechanical properties of the cornea. Of the different theories supporting such involvement of corneal response to reverse geometry contact lenses, the most likely one seems to be the one assuming a faster response and faster recovery for corneas with lower resistance. Larger sample studies would be needed to clarify the involvement of corneal biomechanical properties on corneal response to orthokeratology.Supported in part by a grant from the Science and Technology Foundation (FCT), Ministry of Science and Superior Education (MCES), and European Social Fund (ESF) under contract 8281/2002 granted to J.M.G.-M.Lippincott, Williams & WilkinsUniversidade do MinhoGonzález-Méijome, José ManuelVilla-Collar, CésarQueirós, A.Jorge, JorgeParafita, Manuel A.2008-042008-04-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/8407eng"Cornea". ISSN 0277-3740. 27:4 (Apr. 2008) 421-426.0277-3740info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:47:03Zoai:repositorium.sdum.uminho.pt:1822/8407Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:45:07.508932Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv A pilot study on the influence of biomechanical properties of the cornea on short-term response to myopic corneal refractive therapy
title A pilot study on the influence of biomechanical properties of the cornea on short-term response to myopic corneal refractive therapy
spellingShingle A pilot study on the influence of biomechanical properties of the cornea on short-term response to myopic corneal refractive therapy
González-Méijome, José Manuel
Corneal refractive therapy
Corneal thickness
Corneal biomechanical properties
Orthokeratology
Corneal hysteresis
title_short A pilot study on the influence of biomechanical properties of the cornea on short-term response to myopic corneal refractive therapy
title_full A pilot study on the influence of biomechanical properties of the cornea on short-term response to myopic corneal refractive therapy
title_fullStr A pilot study on the influence of biomechanical properties of the cornea on short-term response to myopic corneal refractive therapy
title_full_unstemmed A pilot study on the influence of biomechanical properties of the cornea on short-term response to myopic corneal refractive therapy
title_sort A pilot study on the influence of biomechanical properties of the cornea on short-term response to myopic corneal refractive therapy
author González-Méijome, José Manuel
author_facet González-Méijome, José Manuel
Villa-Collar, César
Queirós, A.
Jorge, Jorge
Parafita, Manuel A.
author_role author
author2 Villa-Collar, César
Queirós, A.
Jorge, Jorge
Parafita, Manuel A.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv González-Méijome, José Manuel
Villa-Collar, César
Queirós, A.
Jorge, Jorge
Parafita, Manuel A.
dc.subject.por.fl_str_mv Corneal refractive therapy
Corneal thickness
Corneal biomechanical properties
Orthokeratology
Corneal hysteresis
topic Corneal refractive therapy
Corneal thickness
Corneal biomechanical properties
Orthokeratology
Corneal hysteresis
description The authors state that they do not have any proprietary interest in the products named in this article.
publishDate 2008
dc.date.none.fl_str_mv 2008-04
2008-04-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/1822/8407
url http://hdl.handle.net/1822/8407
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv "Cornea". ISSN 0277-3740. 27:4 (Apr. 2008) 421-426.
0277-3740
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Lippincott, Williams & Wilkins
publisher.none.fl_str_mv Lippincott, Williams & Wilkins
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
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reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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