Comparing Visual Acuity, Low Contrast Acuity and Contrast Sensitivity After Trifocal Toric and Extended Depth of Focus Toric Intraocular Lens Implantation

Kjell G Gundersen,1 Rick Potvin2 1IFocus Øyeklinikk AS, Haugesund, Norway; 2Science in Vision, Akron, NY, USACorrespondence: Kjell G GundersenIFocus Øyeklinikk AS, Haugesund 5527, NorwayTel +47 5808900Email kg@ifocus.noPurpose: The aim of this&nbs...

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Autores principales:	Gundersen KG, Potvin R
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2020
Materias:	trifocal toric edof toric low contrast acuity contrast sensitivity presbyopia correction Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/075a0fa9335a4ce29632eb4a16e81efc
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spelling	oai:doaj.org-article:075a0fa9335a4ce29632eb4a16e81efc2021-12-02T12:10:45ZComparing Visual Acuity, Low Contrast Acuity and Contrast Sensitivity After Trifocal Toric and Extended Depth of Focus Toric Intraocular Lens Implantation1177-5483https://doaj.org/article/075a0fa9335a4ce29632eb4a16e81efc2020-04-01T00:00:00Zhttps://www.dovepress.com/comparing-visual-acuity-low-contrast-acuity-and-contrast-sensitivity-a-peer-reviewed-article-OPTHhttps://doaj.org/toc/1177-5483Kjell G Gundersen,1 Rick Potvin2 1IFocus Øyeklinikk AS, Haugesund, Norway; 2Science in Vision, Akron, NY, USACorrespondence: Kjell G GundersenIFocus Øyeklinikk AS, Haugesund 5527, NorwayTel +47 5808900Email kg@ifocus.noPurpose: The aim of this study was to compare visual acuity at various distances (far, intermediate and near), low contrast acuity and contrast sensitivity after trifocal toric and extended depth of focus (EDOF) toric intraocular lens (IOL) implantation.Patients and Methods: This was a non-interventional two-arm comparative study of visual outcomes after uncomplicated bilateral cataract or refractive lens exchange surgery with IOL implantation between 6 months and 5 years before a single diagnostic examination visit. There was no masking and no control group. Subjects had to have uncorrected distance visual acuity (UDVA) of 20/40 (0.3 logMAR) or better measured at the time of their study visit. Clinical evaluations included the manifest refraction, visual acuity (VA) at distance, intermediate (60 cm) and near (40 cm), low contrast (10%) VA and contrast sensitivity.Results: A total of 50 bilaterally implanted patients (25 trifocal, 25 EDOF) were examined; the two groups had similar characteristics, including corneal astigmatism. Postoperative refractive outcomes were also similar. There were no statistically significant differences in distance or intermediate VA between groups, but the trifocal group had significantly better near VA both uncorrected (p = 0.009) and distance-corrected (p = 0.014). There were no statistically significant differences in the low contrast acuity measures between IOLs at either distance or 40 cm, with or without glare. Contrast sensitivity in mesopic and photopic conditions was similar.Conclusion: The trifocal and EDOF toric IOLs performed similarly for all measures except near VA, where the trifocal toric provided significantly better acuity. For subjects interested in reducing spectacle independence at near, this may be an important consideration.Keywords: trifocal toric, EDOF toric, low contrast acuity, contrast sensitivity, presbyopia correctionGundersen KGPotvin RDove Medical Pressarticletrifocal toricedof toriclow contrast acuitycontrast sensitivitypresbyopia correctionOphthalmologyRE1-994ENClinical Ophthalmology, Vol Volume 14, Pp 1071-1078 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	trifocal toric edof toric low contrast acuity contrast sensitivity presbyopia correction Ophthalmology RE1-994
spellingShingle	trifocal toric edof toric low contrast acuity contrast sensitivity presbyopia correction Ophthalmology RE1-994 Gundersen KG Potvin R Comparing Visual Acuity, Low Contrast Acuity and Contrast Sensitivity After Trifocal Toric and Extended Depth of Focus Toric Intraocular Lens Implantation
description	Kjell G Gundersen,1 Rick Potvin2 1IFocus Øyeklinikk AS, Haugesund, Norway; 2Science in Vision, Akron, NY, USACorrespondence: Kjell G GundersenIFocus Øyeklinikk AS, Haugesund 5527, NorwayTel +47 5808900Email kg@ifocus.noPurpose: The aim of this study was to compare visual acuity at various distances (far, intermediate and near), low contrast acuity and contrast sensitivity after trifocal toric and extended depth of focus (EDOF) toric intraocular lens (IOL) implantation.Patients and Methods: This was a non-interventional two-arm comparative study of visual outcomes after uncomplicated bilateral cataract or refractive lens exchange surgery with IOL implantation between 6 months and 5 years before a single diagnostic examination visit. There was no masking and no control group. Subjects had to have uncorrected distance visual acuity (UDVA) of 20/40 (0.3 logMAR) or better measured at the time of their study visit. Clinical evaluations included the manifest refraction, visual acuity (VA) at distance, intermediate (60 cm) and near (40 cm), low contrast (10%) VA and contrast sensitivity.Results: A total of 50 bilaterally implanted patients (25 trifocal, 25 EDOF) were examined; the two groups had similar characteristics, including corneal astigmatism. Postoperative refractive outcomes were also similar. There were no statistically significant differences in distance or intermediate VA between groups, but the trifocal group had significantly better near VA both uncorrected (p = 0.009) and distance-corrected (p = 0.014). There were no statistically significant differences in the low contrast acuity measures between IOLs at either distance or 40 cm, with or without glare. Contrast sensitivity in mesopic and photopic conditions was similar.Conclusion: The trifocal and EDOF toric IOLs performed similarly for all measures except near VA, where the trifocal toric provided significantly better acuity. For subjects interested in reducing spectacle independence at near, this may be an important consideration.Keywords: trifocal toric, EDOF toric, low contrast acuity, contrast sensitivity, presbyopia correction
format	article
author	Gundersen KG Potvin R
author_facet	Gundersen KG Potvin R
author_sort	Gundersen KG
title	Comparing Visual Acuity, Low Contrast Acuity and Contrast Sensitivity After Trifocal Toric and Extended Depth of Focus Toric Intraocular Lens Implantation
title_short	Comparing Visual Acuity, Low Contrast Acuity and Contrast Sensitivity After Trifocal Toric and Extended Depth of Focus Toric Intraocular Lens Implantation
title_full	Comparing Visual Acuity, Low Contrast Acuity and Contrast Sensitivity After Trifocal Toric and Extended Depth of Focus Toric Intraocular Lens Implantation
title_fullStr	Comparing Visual Acuity, Low Contrast Acuity and Contrast Sensitivity After Trifocal Toric and Extended Depth of Focus Toric Intraocular Lens Implantation
title_full_unstemmed	Comparing Visual Acuity, Low Contrast Acuity and Contrast Sensitivity After Trifocal Toric and Extended Depth of Focus Toric Intraocular Lens Implantation
title_sort	comparing visual acuity, low contrast acuity and contrast sensitivity after trifocal toric and extended depth of focus toric intraocular lens implantation
publisher	Dove Medical Press
publishDate	2020
url	https://doaj.org/article/075a0fa9335a4ce29632eb4a16e81efc
work_keys_str_mv	AT gundersenkg comparingvisualacuitylowcontrastacuityandcontrastsensitivityaftertrifocaltoricandextendeddepthoffocustoricintraocularlensimplantation AT potvinr comparingvisualacuitylowcontrastacuityandcontrastsensitivityaftertrifocaltoricandextendeddepthoffocustoricintraocularlensimplantation
_version_	1718394612099317760

Comparing Visual Acuity, Low Contrast Acuity and Contrast Sensitivity After Trifocal Toric and Extended Depth of Focus Toric Intraocular Lens Implantation

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