Influence of fogging lenses and cycloplegia on peripheral refraction
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/1822/9376 |
Resumo: | Purpose: To compare objective peripheral refraction measured with an open-field autorefractor without cycloplegia with the values obtained with fogging lenses or with cycloplegia to inhibit accommodation. Methods: For one hundred and sixty young adults aged 18 to 28 (mean 21.5 ± 2.3 years) their refraction was measured with the Grand Seiko (GS) autorefractor at the center and at four peripheral locations in the nasal and temporal directions under three different conditions: 1) without cycloplegia (GS); 2) without cycloplegia, but using a +2.00D fogging lens (GS_2D) and 3) with cycloplegia (GS_cycl). Results: Mean spherical equivalent refraction (M) was significantly more negative with the GS method in the hyperopic group for central and peripheral refraction, and only at the center and at 10º nasal eccentricity for the emmetropic group (P<0.05, Kruskal- Wallis). Paired comparison showed that differences of M values across techniques were larger for the GS-vs.-GS_2D comparison in myopes and emmetropes, and for the GS-vs.-GS_cycl one in hyperopes (P<0.001, Wilcoxon Signed Ranks Test). The gap between M values for all paired comparisons remained almost constant across all eccentric positions under analysis. Conclusions: Fogging lenses used with open-field autorefraction up to 20º in the nasal and temporal fields seem to provide similar accommodative relaxation to that provided by a cycloplegic. This is particularly important when refracting emmetropes and hyperopes. Moreover, this behavior seems to be independent of the eccentricity at which measurements are taken. |
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Influence of fogging lenses and cycloplegia on peripheral refractionCycloplegiaFogging lensesGrandSeikoOpen-field autorefractionPeripheral refractionCicloplegiaLentes de miopizaciónGrand SeikoAutorrefracción de campo abiertoRefracción periféricaPurpose: To compare objective peripheral refraction measured with an open-field autorefractor without cycloplegia with the values obtained with fogging lenses or with cycloplegia to inhibit accommodation. Methods: For one hundred and sixty young adults aged 18 to 28 (mean 21.5 ± 2.3 years) their refraction was measured with the Grand Seiko (GS) autorefractor at the center and at four peripheral locations in the nasal and temporal directions under three different conditions: 1) without cycloplegia (GS); 2) without cycloplegia, but using a +2.00D fogging lens (GS_2D) and 3) with cycloplegia (GS_cycl). Results: Mean spherical equivalent refraction (M) was significantly more negative with the GS method in the hyperopic group for central and peripheral refraction, and only at the center and at 10º nasal eccentricity for the emmetropic group (P<0.05, Kruskal- Wallis). Paired comparison showed that differences of M values across techniques were larger for the GS-vs.-GS_2D comparison in myopes and emmetropes, and for the GS-vs.-GS_cycl one in hyperopes (P<0.001, Wilcoxon Signed Ranks Test). The gap between M values for all paired comparisons remained almost constant across all eccentric positions under analysis. Conclusions: Fogging lenses used with open-field autorefraction up to 20º in the nasal and temporal fields seem to provide similar accommodative relaxation to that provided by a cycloplegic. This is particularly important when refracting emmetropes and hyperopes. Moreover, this behavior seems to be independent of the eccentricity at which measurements are taken.Objetivo: Comparar las medidas objetivas de refracción periférica realizadas sin cicloplégico con los valores obtenidos con “lentes de miopización” o con cicloplegia, ambas técnicas utilizadas para inhibir la acomodación. Métodos: Se midió la refracción a 160 adultos jóvenes, con edades comprendidas entre 18 y 28 años (media=21,5± 2,3 años), con un autorrefractómetro Grand Seiko (GS), tanto en el centro del campo visual como en 4 regiones de la periferia situadas nasal y temporalmente, y todo ello en 3 condiciones diferentes: 1) sin cicloplegia (GS); 2) sin cicloplegia , pero utilizando una lente translúcida de +2.00 D (GS_2D) y 3) con cicloplegia (GS_cycl). Resultados: La media del equivalente esférico de la refracción (M) resultó ser significativamente más negativa en la condición GS en el grupo de los hipermétropes en lo que respecta a refracción central y periférica, mientras que en el grupo de los emétropes sólo ocurrió esto en el centro y a una excentricidad de 10º nasal (P<0,05, Kruskal-Wallis). La comparación por pares de muestras relacionadas reveló que la mayor diferencia de M entre distintas condiciones se obtuvo al comparar GS y GS_2D en el grupo de los miopes y en el de los emétropes, y al comparar GS y GS_cycl en el de los hipermétropes (P<0,001, contraste de Wilcoxon de rangos con signo). La discrepancia entre valores de M para las distintas comparaciones por pares se mantiene prácticamente constante para todas las excentricidades analizadas. Conclusiones: Las lentes de miopización, utilizadas con un autorrefractómetro con ventana de observación para medir excentricidades de hasta 20º en las direcciones nasal y temporal parece que logran una relajación acomodativa similar a la que proporciona el agente cicloplégico. Esto resulta especialmente relevante cuando se evalúa la refracción en emétropes e hipermétropes. Además, este comportamiento parece ser independiente de la excentricidad en la que se realiza la medida.(undefined)Colegio Nacional de Ópticos-OptometristasUniversidade do MinhoQueirós, A.Jorge, JorgeGonzález-Méijome, José Manuel2009-06-302009-06-30T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/9376eng“Journal of Optometry”. ISSN 1888-4296. 2:2 (2009) 83-89.1888-429610.3921/joptom.2009.83http://www.journalofoptometry.org/10.3921/joptom.2009.83.pdfinfo: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:RCAAP2023-07-21T12:31:47Zoai:repositorium.sdum.uminho.pt:1822/9376Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:27:04.615879Repositório 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 |
Influence of fogging lenses and cycloplegia on peripheral refraction |
title |
Influence of fogging lenses and cycloplegia on peripheral refraction |
spellingShingle |
Influence of fogging lenses and cycloplegia on peripheral refraction Queirós, A. Cycloplegia Fogging lenses GrandSeiko Open-field autorefraction Peripheral refraction Cicloplegia Lentes de miopización Grand Seiko Autorrefracción de campo abierto Refracción periférica |
title_short |
Influence of fogging lenses and cycloplegia on peripheral refraction |
title_full |
Influence of fogging lenses and cycloplegia on peripheral refraction |
title_fullStr |
Influence of fogging lenses and cycloplegia on peripheral refraction |
title_full_unstemmed |
Influence of fogging lenses and cycloplegia on peripheral refraction |
title_sort |
Influence of fogging lenses and cycloplegia on peripheral refraction |
author |
Queirós, A. |
author_facet |
Queirós, A. Jorge, Jorge González-Méijome, José Manuel |
author_role |
author |
author2 |
Jorge, Jorge González-Méijome, José Manuel |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Queirós, A. Jorge, Jorge González-Méijome, José Manuel |
dc.subject.por.fl_str_mv |
Cycloplegia Fogging lenses GrandSeiko Open-field autorefraction Peripheral refraction Cicloplegia Lentes de miopización Grand Seiko Autorrefracción de campo abierto Refracción periférica |
topic |
Cycloplegia Fogging lenses GrandSeiko Open-field autorefraction Peripheral refraction Cicloplegia Lentes de miopización Grand Seiko Autorrefracción de campo abierto Refracción periférica |
description |
Purpose: To compare objective peripheral refraction measured with an open-field autorefractor without cycloplegia with the values obtained with fogging lenses or with cycloplegia to inhibit accommodation. Methods: For one hundred and sixty young adults aged 18 to 28 (mean 21.5 ± 2.3 years) their refraction was measured with the Grand Seiko (GS) autorefractor at the center and at four peripheral locations in the nasal and temporal directions under three different conditions: 1) without cycloplegia (GS); 2) without cycloplegia, but using a +2.00D fogging lens (GS_2D) and 3) with cycloplegia (GS_cycl). Results: Mean spherical equivalent refraction (M) was significantly more negative with the GS method in the hyperopic group for central and peripheral refraction, and only at the center and at 10º nasal eccentricity for the emmetropic group (P<0.05, Kruskal- Wallis). Paired comparison showed that differences of M values across techniques were larger for the GS-vs.-GS_2D comparison in myopes and emmetropes, and for the GS-vs.-GS_cycl one in hyperopes (P<0.001, Wilcoxon Signed Ranks Test). The gap between M values for all paired comparisons remained almost constant across all eccentric positions under analysis. Conclusions: Fogging lenses used with open-field autorefraction up to 20º in the nasal and temporal fields seem to provide similar accommodative relaxation to that provided by a cycloplegic. This is particularly important when refracting emmetropes and hyperopes. Moreover, this behavior seems to be independent of the eccentricity at which measurements are taken. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-06-30 2009-06-30T00:00:00Z |
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/1822/9376 |
url |
http://hdl.handle.net/1822/9376 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
“Journal of Optometry”. ISSN 1888-4296. 2:2 (2009) 83-89. 1888-4296 10.3921/joptom.2009.83 http://www.journalofoptometry.org/10.3921/joptom.2009.83.pdf |
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 |
Colegio Nacional de Ópticos-Optometristas |
publisher.none.fl_str_mv |
Colegio Nacional de Ópticos-Optometristas |
dc.source.none.fl_str_mv |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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