Light distortion and spherical aberration for the accommodating and nonaccommodating eye
Autor(a) principal: | |
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Data de Publicação: | 2016 |
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/1822/44052 |
Resumo: | To evaluate how different amounts of induced spherical aberration (SA) affect the light distortion (LD) phenomena, tests were performed using an experimental device to measure the distortion (haloes, glare, and so on) of a point source. To simulate the effect of SA, eight different phase plates between þ0.300 and −0.300 μm of SA for a 5-mm aperture were used in a random and double-masked experimental design. Measurements were performed at a distance of 2 m in a darkened room in 10 eyes of five subjects with a mean age of 26.4 6.1 years and a mean refractive error of −0.50 0.70 D. Data were obtained with natural pupil and after pupil dilatation. The measurements with this experimental system showed a significant increase in all distortion parameters with cycloplegia for the phase plates with the higher positive SA (þ0.300 and þ0.150 μm). The disturbance index increased from 14.86 6.12% to 57.98 36.20% (p < 0.05) with the þ0.300 μm plate. The same effect was observed through at a much lower rate when the eye could accommodate. Plates inducing negative SA did not change the LD compared to the control condition without induction of SA or even decreased the effect of distortion. Pupillary dilation and cyclopegia led to a significant increase in the size of the LD when increasing values of SA were induced. Accommodation and pupillary constriction are capable of compensating the degradation of the optical quality induced. |
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Light distortion and spherical aberration for the accommodating and nonaccommodating eyeLight distortionGlareHaloesPupil sizeSpherical aberrationScience & TechnologyTo evaluate how different amounts of induced spherical aberration (SA) affect the light distortion (LD) phenomena, tests were performed using an experimental device to measure the distortion (haloes, glare, and so on) of a point source. To simulate the effect of SA, eight different phase plates between þ0.300 and −0.300 μm of SA for a 5-mm aperture were used in a random and double-masked experimental design. Measurements were performed at a distance of 2 m in a darkened room in 10 eyes of five subjects with a mean age of 26.4 6.1 years and a mean refractive error of −0.50 0.70 D. Data were obtained with natural pupil and after pupil dilatation. The measurements with this experimental system showed a significant increase in all distortion parameters with cycloplegia for the phase plates with the higher positive SA (þ0.300 and þ0.150 μm). The disturbance index increased from 14.86 6.12% to 57.98 36.20% (p < 0.05) with the þ0.300 μm plate. The same effect was observed through at a much lower rate when the eye could accommodate. Plates inducing negative SA did not change the LD compared to the control condition without induction of SA or even decreased the effect of distortion. Pupillary dilation and cyclopegia led to a significant increase in the size of the LD when increasing values of SA were induced. Accommodation and pupillary constriction are capable of compensating the degradation of the optical quality induced.This study was funded by the FEDER through the COMPETE Program and by the Portuguese Foundation for Science and Technology (FCT) in the framework of projects PTDC/SAUBEB/098391/2008, PTDC/SAU-BEB/098392/2008 and the Strategic Project PEST-C/FIS/UI607/2011. The authors thank the assistance of Professor Norberto López-Gil for the loan of the SA plates and the discussion of the results. R.M.A, J. M.G.M., H.F.N., L.R.V., and S.C.P.M have applied for a patent on the experimental device. Other authors declare that they do not have any proprietary or financial interest in any of the materials mentioned in this article.Society of Photo Optical Instrumentation EngineersUniversidade do MinhoAraújo, Rute Juliana Ferreira MacedoNeves, Helena Isabel FerreiraRico-del-Viejo, L.Matos, Sofia Cláudia PeixotoGonzález-Méijome, José Manuel2016-072016-07-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/44052engMacedo-de-Araújo, Rute; Ferreira-Neves, Helena; Rico-del-Viejo, Laura; Peixoto-de-Matos, Sofia C; González-Méijome, José Manuel. Light distortion and spherical aberration for the accommodating and nonaccommodating eye, Journal of Biomedical Optics, 21, 7, 075003-075003, 2016.1083-366810.1117/1.JBO.21.7.07500327387703info: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:RCAAP2023-07-21T12:32:41Zoai:repositorium.sdum.uminho.pt:1822/44052Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:28:04.053455Repositório 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 |
Light distortion and spherical aberration for the accommodating and nonaccommodating eye |
title |
Light distortion and spherical aberration for the accommodating and nonaccommodating eye |
spellingShingle |
Light distortion and spherical aberration for the accommodating and nonaccommodating eye Araújo, Rute Juliana Ferreira Macedo Light distortion Glare Haloes Pupil size Spherical aberration Science & Technology |
title_short |
Light distortion and spherical aberration for the accommodating and nonaccommodating eye |
title_full |
Light distortion and spherical aberration for the accommodating and nonaccommodating eye |
title_fullStr |
Light distortion and spherical aberration for the accommodating and nonaccommodating eye |
title_full_unstemmed |
Light distortion and spherical aberration for the accommodating and nonaccommodating eye |
title_sort |
Light distortion and spherical aberration for the accommodating and nonaccommodating eye |
author |
Araújo, Rute Juliana Ferreira Macedo |
author_facet |
Araújo, Rute Juliana Ferreira Macedo Neves, Helena Isabel Ferreira Rico-del-Viejo, L. Matos, Sofia Cláudia Peixoto González-Méijome, José Manuel |
author_role |
author |
author2 |
Neves, Helena Isabel Ferreira Rico-del-Viejo, L. Matos, Sofia Cláudia Peixoto González-Méijome, José Manuel |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Araújo, Rute Juliana Ferreira Macedo Neves, Helena Isabel Ferreira Rico-del-Viejo, L. Matos, Sofia Cláudia Peixoto González-Méijome, José Manuel |
dc.subject.por.fl_str_mv |
Light distortion Glare Haloes Pupil size Spherical aberration Science & Technology |
topic |
Light distortion Glare Haloes Pupil size Spherical aberration Science & Technology |
description |
To evaluate how different amounts of induced spherical aberration (SA) affect the light distortion (LD) phenomena, tests were performed using an experimental device to measure the distortion (haloes, glare, and so on) of a point source. To simulate the effect of SA, eight different phase plates between þ0.300 and −0.300 μm of SA for a 5-mm aperture were used in a random and double-masked experimental design. Measurements were performed at a distance of 2 m in a darkened room in 10 eyes of five subjects with a mean age of 26.4 6.1 years and a mean refractive error of −0.50 0.70 D. Data were obtained with natural pupil and after pupil dilatation. The measurements with this experimental system showed a significant increase in all distortion parameters with cycloplegia for the phase plates with the higher positive SA (þ0.300 and þ0.150 μm). The disturbance index increased from 14.86 6.12% to 57.98 36.20% (p < 0.05) with the þ0.300 μm plate. The same effect was observed through at a much lower rate when the eye could accommodate. Plates inducing negative SA did not change the LD compared to the control condition without induction of SA or even decreased the effect of distortion. Pupillary dilation and cyclopegia led to a significant increase in the size of the LD when increasing values of SA were induced. Accommodation and pupillary constriction are capable of compensating the degradation of the optical quality induced. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-07 2016-07-01T00:00:00Z |
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/1822/44052 |
url |
http://hdl.handle.net/1822/44052 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Macedo-de-Araújo, Rute; Ferreira-Neves, Helena; Rico-del-Viejo, Laura; Peixoto-de-Matos, Sofia C; González-Méijome, José Manuel. Light distortion and spherical aberration for the accommodating and nonaccommodating eye, Journal of Biomedical Optics, 21, 7, 075003-075003, 2016. 1083-3668 10.1117/1.JBO.21.7.075003 27387703 |
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 |
Society of Photo Optical Instrumentation Engineers |
publisher.none.fl_str_mv |
Society of Photo Optical Instrumentation Engineers |
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) |
collection |
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 |
repository.mail.fl_str_mv |
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1799132775365738496 |