Computing retinal contour from optical biometry
Autor(a) principal: | |
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Data de Publicação: | 2014 |
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/1822/31258 |
Resumo: | Purpose. To describe a new methodology that derives horizontal posterior retinal contours from partial coherence interferometry (PCI) and ray tracing using the corneal topography. Methods. Corneal topography and PCI for seven horizontal visual field eccentricities correspondent to the central 60 degrees of the posterior pole were obtained in 55 myopic eyes. A semicustomized eye model based on the subject’s corneal topography and the Navarro eye model was generated using Zemax-EE software. The model was used to compute the optical path length in the seven directionswhere PCImeasurementswere obtained.Vitreous chamber depth was computed using the PCI values obtained at each of those directions. Matlab software was developed to fit the best conic curve to the set of points previously obtained. We tested the limit in the accuracy of the methodology when the actual cornea of the subject is not used and for two different lens geometries. Results. A standard eye model can induce an error in the retina sagitta estimation of the order of hundreds of micrometers in comparison with the semicustomized eye model. However, the use of a different lens model leads to an error of the order of tens of micrometers. The apical radius and conic constant of the average fit were j11.91 mm and j0.15, respectively. In general, a nasal-temporal asymmetry in the retina contour was found, showing mean larger values of vitreous chamber depth in the nasal side of the eye. Conclusions. The use of a semicustomized eye model, together with optical path length measured by PCI for different angles, can be used to predict the retinal contour within tenths of micrometers. This methodology can be useful in studies trying to understand the effect of peripheral retinal location on myopia progression as well as modeling the optics of the human eye for a wide field. |
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Computing retinal contour from optical biometryPartial coherence optical biometryIOLMasterRetinal contourMyopiaModel eye for a wide fieldScience & TechnologyPurpose. To describe a new methodology that derives horizontal posterior retinal contours from partial coherence interferometry (PCI) and ray tracing using the corneal topography. Methods. Corneal topography and PCI for seven horizontal visual field eccentricities correspondent to the central 60 degrees of the posterior pole were obtained in 55 myopic eyes. A semicustomized eye model based on the subject’s corneal topography and the Navarro eye model was generated using Zemax-EE software. The model was used to compute the optical path length in the seven directionswhere PCImeasurementswere obtained.Vitreous chamber depth was computed using the PCI values obtained at each of those directions. Matlab software was developed to fit the best conic curve to the set of points previously obtained. We tested the limit in the accuracy of the methodology when the actual cornea of the subject is not used and for two different lens geometries. Results. A standard eye model can induce an error in the retina sagitta estimation of the order of hundreds of micrometers in comparison with the semicustomized eye model. However, the use of a different lens model leads to an error of the order of tens of micrometers. The apical radius and conic constant of the average fit were j11.91 mm and j0.15, respectively. In general, a nasal-temporal asymmetry in the retina contour was found, showing mean larger values of vitreous chamber depth in the nasal side of the eye. Conclusions. The use of a semicustomized eye model, together with optical path length measured by PCI for different angles, can be used to predict the retinal contour within tenths of micrometers. This methodology can be useful in studies trying to understand the effect of peripheral retinal location on myopia progression as well as modeling the optics of the human eye for a wide field.This study has been funded by FEDER through the COMPTETE Program and by the Portuguese Foundation for Science and Technology (FCT) in the framework of projects PTDC/SAU-BEB/098391/2008, PTDC/SAU-BEB/098392/2008, and the Strategic Project PEST-C/FIS/UI607/2011. NL was also supported by a Fundacion Seneca de la Region de Murcia grant 15312/PI/10. RN was supported by the Spanish Ministry of Economia y Competitividad and European Union grant FIS2011-22496 and by the Government of Aragon group E99. We thank Larry N. Thibos for his comments on the manuscript.American Academy of Optometry (AAOPT)Universidade do MinhoRibeiro, Miguel FariaLópez-Gil, NorbertoNavarro, RafaelFerreira, Daniela LopesJorge, JorgeGonzález-Méijome, José Manuel20142014-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/31258eng1050-548810.1097/OPX.000000000000022524637487info: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:RCAAP2023-07-21T12:22:53ZPortal AgregadorONG |
dc.title.none.fl_str_mv |
Computing retinal contour from optical biometry |
title |
Computing retinal contour from optical biometry |
spellingShingle |
Computing retinal contour from optical biometry Ribeiro, Miguel Faria Partial coherence optical biometry IOLMaster Retinal contour Myopia Model eye for a wide field Science & Technology |
title_short |
Computing retinal contour from optical biometry |
title_full |
Computing retinal contour from optical biometry |
title_fullStr |
Computing retinal contour from optical biometry |
title_full_unstemmed |
Computing retinal contour from optical biometry |
title_sort |
Computing retinal contour from optical biometry |
author |
Ribeiro, Miguel Faria |
author_facet |
Ribeiro, Miguel Faria López-Gil, Norberto Navarro, Rafael Ferreira, Daniela Lopes Jorge, Jorge González-Méijome, José Manuel |
author_role |
author |
author2 |
López-Gil, Norberto Navarro, Rafael Ferreira, Daniela Lopes Jorge, Jorge González-Méijome, José Manuel |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Ribeiro, Miguel Faria López-Gil, Norberto Navarro, Rafael Ferreira, Daniela Lopes Jorge, Jorge González-Méijome, José Manuel |
dc.subject.por.fl_str_mv |
Partial coherence optical biometry IOLMaster Retinal contour Myopia Model eye for a wide field Science & Technology |
topic |
Partial coherence optical biometry IOLMaster Retinal contour Myopia Model eye for a wide field Science & Technology |
description |
Purpose. To describe a new methodology that derives horizontal posterior retinal contours from partial coherence interferometry (PCI) and ray tracing using the corneal topography. Methods. Corneal topography and PCI for seven horizontal visual field eccentricities correspondent to the central 60 degrees of the posterior pole were obtained in 55 myopic eyes. A semicustomized eye model based on the subject’s corneal topography and the Navarro eye model was generated using Zemax-EE software. The model was used to compute the optical path length in the seven directionswhere PCImeasurementswere obtained.Vitreous chamber depth was computed using the PCI values obtained at each of those directions. Matlab software was developed to fit the best conic curve to the set of points previously obtained. We tested the limit in the accuracy of the methodology when the actual cornea of the subject is not used and for two different lens geometries. Results. A standard eye model can induce an error in the retina sagitta estimation of the order of hundreds of micrometers in comparison with the semicustomized eye model. However, the use of a different lens model leads to an error of the order of tens of micrometers. The apical radius and conic constant of the average fit were j11.91 mm and j0.15, respectively. In general, a nasal-temporal asymmetry in the retina contour was found, showing mean larger values of vitreous chamber depth in the nasal side of the eye. Conclusions. The use of a semicustomized eye model, together with optical path length measured by PCI for different angles, can be used to predict the retinal contour within tenths of micrometers. This methodology can be useful in studies trying to understand the effect of peripheral retinal location on myopia progression as well as modeling the optics of the human eye for a wide field. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014 2014-01-01T00:00:00Z |
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/1822/31258 |
url |
http://hdl.handle.net/1822/31258 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
1050-5488 10.1097/OPX.0000000000000225 24637487 |
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 |
American Academy of Optometry (AAOPT) |
publisher.none.fl_str_mv |
American Academy of Optometry (AAOPT) |
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 |
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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 |
reponame_str |
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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repository.mail.fl_str_mv |
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1777303743487803392 |