Corneal aberrations in keratoconic eyes: influence of pupil size and centering

Autores
Comastri, Silvia Ana Elva; Perez, Liliana Ines; Perez, Gervasio Daniel; Martin, G.; Bianchetti, A.
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Ocular aberrations vary among subjects and under different conditions and are commonly analyzed expanding the wavefront aberration function in Zernike polynomials. In previous articles, explicit analytical formulas to transform Zernike coefficients of up to 7th order corresponding to an original pupil into those related to a contracted displaced new pupil are obtained. In the present paper these formulas are applied to 20 keratoconic corneas of varying severity. Employing the SN CT1000 topographer, aberrations of the anterior corneal surface for a pupil of semi-diameter 3 mm centered on the keratometric axis are evaluated, the relation between the higher-order root mean square wavefront error and the index KISA% characterizing keratoconus is studied and the size and centering of the ocular photopic natural pupil are determined. Using these data and the transformation formulas, new coefficients associated to the photopic pupil size are computed and their variation when coordinates origin is shifted from the keratometric axis to the ocular pupil centre is analyzed.
Fil: Comastri, Silvia Ana Elva. Universidad de Buenos Aires. Facultad de Ingenieria. Departamento de Fisica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Perez, Liliana Ines. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ingenieria. Departamento de Fisica; Argentina
Fil: Perez, Gervasio Daniel. Universidad de Buenos Aires. Facultad de Ingenieria. Departamento de Fisica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Martin, G.. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física; Argentina. Reichert Inc.; Estados Unidos
Fil: Bianchetti, A.. Universidad de Buenos Aires. Facultad de Ingenieria. Departamento de Fisica; Argentina
Materia
Corneal Aberrations
Keratoconus
Zernike Coefficients
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/14890
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Corneal aberrations in keratoconic eyes: influence of pupil size and centeringComastri, Silvia Ana ElvaPerez, Liliana InesPerez, Gervasio DanielMartin, G.Bianchetti, A.Corneal AberrationsKeratoconusZernike Coefficientshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Ocular aberrations vary among subjects and under different conditions and are commonly analyzed expanding the wavefront aberration function in Zernike polynomials. In previous articles, explicit analytical formulas to transform Zernike coefficients of up to 7th order corresponding to an original pupil into those related to a contracted displaced new pupil are obtained. In the present paper these formulas are applied to 20 keratoconic corneas of varying severity. Employing the SN CT1000 topographer, aberrations of the anterior corneal surface for a pupil of semi-diameter 3 mm centered on the keratometric axis are evaluated, the relation between the higher-order root mean square wavefront error and the index KISA% characterizing keratoconus is studied and the size and centering of the ocular photopic natural pupil are determined. Using these data and the transformation formulas, new coefficients associated to the photopic pupil size are computed and their variation when coordinates origin is shifted from the keratometric axis to the ocular pupil centre is analyzed.Fil: Comastri, Silvia Ana Elva. Universidad de Buenos Aires. Facultad de Ingenieria. Departamento de Fisica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Perez, Liliana Ines. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ingenieria. Departamento de Fisica; ArgentinaFil: Perez, Gervasio Daniel. Universidad de Buenos Aires. Facultad de Ingenieria. Departamento de Fisica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Martin, G.. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física; Argentina. Reichert Inc.; Estados UnidosFil: Bianchetti, A.. Universidad de Buenos Aires. Facultad de Ingenieria. Departamento de Fisica; ArgentinaIOP Publishing2011-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/14890Comastri, Silvia Ana Elva; Perez, Liliana Ines; Perez, Gervasio Daniel; Martin, G.; Bianchetti, A.; Corneal aberrations in keratoconic eyes: influence of pupil size and centering; IOP Publishing; Journal of Physics: Conference Series; 274; 1; 2-2011; 1-91742-6588enginfo:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/1742-6596/274/1/012109/metainfo:eu-repo/semantics/altIdentifier/doi/10.1088/1742-6596/274/1/012109info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:32:48Zoai:ri.conicet.gov.ar:11336/14890instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:32:48.576CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Corneal aberrations in keratoconic eyes: influence of pupil size and centering
title Corneal aberrations in keratoconic eyes: influence of pupil size and centering
spellingShingle Corneal aberrations in keratoconic eyes: influence of pupil size and centering
Comastri, Silvia Ana Elva
Corneal Aberrations
Keratoconus
Zernike Coefficients
title_short Corneal aberrations in keratoconic eyes: influence of pupil size and centering
title_full Corneal aberrations in keratoconic eyes: influence of pupil size and centering
title_fullStr Corneal aberrations in keratoconic eyes: influence of pupil size and centering
title_full_unstemmed Corneal aberrations in keratoconic eyes: influence of pupil size and centering
title_sort Corneal aberrations in keratoconic eyes: influence of pupil size and centering
dc.creator.none.fl_str_mv Comastri, Silvia Ana Elva
Perez, Liliana Ines
Perez, Gervasio Daniel
Martin, G.
Bianchetti, A.
author Comastri, Silvia Ana Elva
author_facet Comastri, Silvia Ana Elva
Perez, Liliana Ines
Perez, Gervasio Daniel
Martin, G.
Bianchetti, A.
author_role author
author2 Perez, Liliana Ines
Perez, Gervasio Daniel
Martin, G.
Bianchetti, A.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Corneal Aberrations
Keratoconus
Zernike Coefficients
topic Corneal Aberrations
Keratoconus
Zernike Coefficients
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Ocular aberrations vary among subjects and under different conditions and are commonly analyzed expanding the wavefront aberration function in Zernike polynomials. In previous articles, explicit analytical formulas to transform Zernike coefficients of up to 7th order corresponding to an original pupil into those related to a contracted displaced new pupil are obtained. In the present paper these formulas are applied to 20 keratoconic corneas of varying severity. Employing the SN CT1000 topographer, aberrations of the anterior corneal surface for a pupil of semi-diameter 3 mm centered on the keratometric axis are evaluated, the relation between the higher-order root mean square wavefront error and the index KISA% characterizing keratoconus is studied and the size and centering of the ocular photopic natural pupil are determined. Using these data and the transformation formulas, new coefficients associated to the photopic pupil size are computed and their variation when coordinates origin is shifted from the keratometric axis to the ocular pupil centre is analyzed.
Fil: Comastri, Silvia Ana Elva. Universidad de Buenos Aires. Facultad de Ingenieria. Departamento de Fisica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Perez, Liliana Ines. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ingenieria. Departamento de Fisica; Argentina
Fil: Perez, Gervasio Daniel. Universidad de Buenos Aires. Facultad de Ingenieria. Departamento de Fisica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Martin, G.. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física; Argentina. Reichert Inc.; Estados Unidos
Fil: Bianchetti, A.. Universidad de Buenos Aires. Facultad de Ingenieria. Departamento de Fisica; Argentina
description Ocular aberrations vary among subjects and under different conditions and are commonly analyzed expanding the wavefront aberration function in Zernike polynomials. In previous articles, explicit analytical formulas to transform Zernike coefficients of up to 7th order corresponding to an original pupil into those related to a contracted displaced new pupil are obtained. In the present paper these formulas are applied to 20 keratoconic corneas of varying severity. Employing the SN CT1000 topographer, aberrations of the anterior corneal surface for a pupil of semi-diameter 3 mm centered on the keratometric axis are evaluated, the relation between the higher-order root mean square wavefront error and the index KISA% characterizing keratoconus is studied and the size and centering of the ocular photopic natural pupil are determined. Using these data and the transformation formulas, new coefficients associated to the photopic pupil size are computed and their variation when coordinates origin is shifted from the keratometric axis to the ocular pupil centre is analyzed.
publishDate 2011
dc.date.none.fl_str_mv 2011-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/14890
Comastri, Silvia Ana Elva; Perez, Liliana Ines; Perez, Gervasio Daniel; Martin, G.; Bianchetti, A.; Corneal aberrations in keratoconic eyes: influence of pupil size and centering; IOP Publishing; Journal of Physics: Conference Series; 274; 1; 2-2011; 1-9
1742-6588
url http://hdl.handle.net/11336/14890
identifier_str_mv Comastri, Silvia Ana Elva; Perez, Liliana Ines; Perez, Gervasio Daniel; Martin, G.; Bianchetti, A.; Corneal aberrations in keratoconic eyes: influence of pupil size and centering; IOP Publishing; Journal of Physics: Conference Series; 274; 1; 2-2011; 1-9
1742-6588
dc.language.none.fl_str_mv eng
language eng
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info:eu-repo/semantics/altIdentifier/doi/10.1088/1742-6596/274/1/012109
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.069144

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