Visual acuity at various distances and defocus curve: a good match

The defocus curve (DC) has become the gold standard method for assessing the visual performance at different distances, and hence, to evaluate the depth of focus that is provided by modern presbyopia-compensating intraocular lenses that are used in cataract surgery. A former study, carried out by ot...

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Autores: Clavé Cerezo, Laura|||0000-0001-9483-488X, Torrents Gómez, Aurora|||0000-0003-2806-7306, Millán Garcia-Varela, M. Sagrario|||0000-0001-6950-2373
Tipo de recurso: artículo
Fecha de publicación:2022
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/362177
Acceso en línea:https://hdl.handle.net/2117/362177
https://dx.doi.org/10.3390/photonics9020085
Access Level:acceso abierto
Palabra clave:Visual acuity
Intraocular lenses
Eye examination
Defocus curve
Intraocular lens
Accommodation
Agudesa visual
Lents intraoculars
Àrees temàtiques de la UPC::Ciències de la visió::Optometria::Agudesa visual
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spelling Visual acuity at various distances and defocus curve: a good matchClavé Cerezo, Laura|||0000-0001-9483-488XTorrents Gómez, Aurora|||0000-0003-2806-7306Millán Garcia-Varela, M. Sagrario|||0000-0001-6950-2373Visual acuityIntraocular lensesVisual acuityEye examinationDefocus curveIntraocular lensAccommodationAgudesa visualLents intraocularsÀrees temàtiques de la UPC::Ciències de la visió::Optometria::Agudesa visualThe defocus curve (DC) has become the gold standard method for assessing the visual performance at different distances, and hence, to evaluate the depth of focus that is provided by modern presbyopia-compensating intraocular lenses that are used in cataract surgery. A former study, carried out by other authors, reported that the DC method, based on placing the chart at far distance and using trial negative lenses, underestimated the visual acuity that was measured by varying the test distance (VD) in pseudophakic patients. We have revisited the issue with pseudophakic subjects and have extended the study to include young phakic observers with their natural accommodation preserved. Our results show that both the VD and DC methods are equivalent in precision and accuracy and can be used indistinctly. However, the DC method is more practical in the clinics because it does not require further control of the chart positioning and illuminance.This research funded by the Agencia Estatal de Investigación, Ministerio de Ciencia e Innovación of the Spanish government (PID2020-114582RB-I00/AEI/10.13039/501100011033).Peer Reviewed20222022-02-0120222022-02-11journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/362177https://dx.doi.org/10.3390/photonics9020085reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)InglésengAgencia Estatal de Investigación http://doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020 PID2020-114582RB-I00 IMPLANTES OPTICOS INTRAOCULARES CORRECTORES DE LA PRESBICIA PARA UNA COMPENSACION VISUAL PERSONALIZADAopen accesshttp://purl.org/coar/access_right/c_abf2Attribution 3.0 Spainhttp://creativecommons.org/licenses/by/3.0/es/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/3621772026-05-27T15:37:01Z
dc.title.none.fl_str_mv Visual acuity at various distances and defocus curve: a good match
title Visual acuity at various distances and defocus curve: a good match
spellingShingle Visual acuity at various distances and defocus curve: a good match
Clavé Cerezo, Laura|||0000-0001-9483-488X
Visual acuity
Intraocular lenses
Visual acuity
Eye examination
Defocus curve
Intraocular lens
Accommodation
Agudesa visual
Lents intraoculars
Àrees temàtiques de la UPC::Ciències de la visió::Optometria::Agudesa visual
title_short Visual acuity at various distances and defocus curve: a good match
title_full Visual acuity at various distances and defocus curve: a good match
title_fullStr Visual acuity at various distances and defocus curve: a good match
title_full_unstemmed Visual acuity at various distances and defocus curve: a good match
title_sort Visual acuity at various distances and defocus curve: a good match
dc.creator.none.fl_str_mv Clavé Cerezo, Laura|||0000-0001-9483-488X
Torrents Gómez, Aurora|||0000-0003-2806-7306
Millán Garcia-Varela, M. Sagrario|||0000-0001-6950-2373
author Clavé Cerezo, Laura|||0000-0001-9483-488X
author_facet Clavé Cerezo, Laura|||0000-0001-9483-488X
Torrents Gómez, Aurora|||0000-0003-2806-7306
Millán Garcia-Varela, M. Sagrario|||0000-0001-6950-2373
author_role author
author2 Torrents Gómez, Aurora|||0000-0003-2806-7306
Millán Garcia-Varela, M. Sagrario|||0000-0001-6950-2373
author2_role author
author
dc.subject.none.fl_str_mv Visual acuity
Intraocular lenses
Visual acuity
Eye examination
Defocus curve
Intraocular lens
Accommodation
Agudesa visual
Lents intraoculars
Àrees temàtiques de la UPC::Ciències de la visió::Optometria::Agudesa visual
topic Visual acuity
Intraocular lenses
Visual acuity
Eye examination
Defocus curve
Intraocular lens
Accommodation
Agudesa visual
Lents intraoculars
Àrees temàtiques de la UPC::Ciències de la visió::Optometria::Agudesa visual
description The defocus curve (DC) has become the gold standard method for assessing the visual performance at different distances, and hence, to evaluate the depth of focus that is provided by modern presbyopia-compensating intraocular lenses that are used in cataract surgery. A former study, carried out by other authors, reported that the DC method, based on placing the chart at far distance and using trial negative lenses, underestimated the visual acuity that was measured by varying the test distance (VD) in pseudophakic patients. We have revisited the issue with pseudophakic subjects and have extended the study to include young phakic observers with their natural accommodation preserved. Our results show that both the VD and DC methods are equivalent in precision and accuracy and can be used indistinctly. However, the DC method is more practical in the clinics because it does not require further control of the chart positioning and illuminance.
publishDate 2022
dc.date.none.fl_str_mv 2022
2022-02-01
2022
2022-02-11
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/362177
https://dx.doi.org/10.3390/photonics9020085
url https://hdl.handle.net/2117/362177
https://dx.doi.org/10.3390/photonics9020085
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Agencia Estatal de Investigación http://doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020 PID2020-114582RB-I00 IMPLANTES OPTICOS INTRAOCULARES CORRECTORES DE LA PRESBICIA PARA UNA COMPENSACION VISUAL PERSONALIZADA
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 3.0 Spain
http://creativecommons.org/licenses/by/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 3.0 Spain
http://creativecommons.org/licenses/by/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.301603

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