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Visualization of Ray Propagation through Extended Depth-of-Focus Intraocular Lenses

Extended depth-of-focus (EDoF) presbyopia-correcting intraocular lens (IOL) models differ in their optical design and performance. In the laboratory, we compared the ray propagation and light intensity profiles of four IOLs: the non-diffractive AcrySof IQ Vivity (Alcon Inc., Fort Worth, TX, USA) and...

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Autores principales: Baur, Isabella D., Auffarth, Gerd U., Yan, Weijia, Łabuz, Grzegorz, Khoramnia, Ramin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9689910/
https://www.ncbi.nlm.nih.gov/pubmed/36359510
http://dx.doi.org/10.3390/diagnostics12112667
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author Baur, Isabella D.
Auffarth, Gerd U.
Yan, Weijia
Łabuz, Grzegorz
Khoramnia, Ramin
author_facet Baur, Isabella D.
Auffarth, Gerd U.
Yan, Weijia
Łabuz, Grzegorz
Khoramnia, Ramin
author_sort Baur, Isabella D.
collection PubMed
description Extended depth-of-focus (EDoF) presbyopia-correcting intraocular lens (IOL) models differ in their optical design and performance. In the laboratory, we compared the ray propagation and light intensity profiles of four IOLs: the non-diffractive AcrySof IQ Vivity (Alcon Inc., Fort Worth, TX, USA) and two diffractive models, Symfony ZXR00 (Johnson & Johnson Vision, Jacksonville, FL, USA) and AT Lara 829 MP (Carl Zeiss Meditec, Berlin, Germany). A fourth lens, the monofocal AcrySof IQ SN60WF (Alcon Inc.) acted as the control. We projected a 520 nm laser light through each submerged lens in a bath of fluorescein solution. A camera mounted on a microscope captured the light that emerged from the IOL. We recorded the IOLs’ point spread function (PSF) to determine the presence of unwanted visual effects. The ray propagation visualization and light intensity profile of the monofocal control showed one distinct focus, while the AcrySof IQ Vivity demonstrated an extended focus area. We observed two distinct foci with each diffractive IOL. We found a lower level of light spread beyond the PSF center for the AcrySof IQ Vivity compared to the diffractive IOLs. In conclusion, we could confirm the extended range of focus for all the EDoF IOL models. However, the non-diffractive AcrySof IQ Vivity appears to have a smoother transition from a far to an intermediate range. We discuss whether, in clinical use, the higher level of spurious light we found in the diffractive designs may translate into increased dysphotopsia.
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spelling pubmed-96899102022-11-25 Visualization of Ray Propagation through Extended Depth-of-Focus Intraocular Lenses Baur, Isabella D. Auffarth, Gerd U. Yan, Weijia Łabuz, Grzegorz Khoramnia, Ramin Diagnostics (Basel) Article Extended depth-of-focus (EDoF) presbyopia-correcting intraocular lens (IOL) models differ in their optical design and performance. In the laboratory, we compared the ray propagation and light intensity profiles of four IOLs: the non-diffractive AcrySof IQ Vivity (Alcon Inc., Fort Worth, TX, USA) and two diffractive models, Symfony ZXR00 (Johnson & Johnson Vision, Jacksonville, FL, USA) and AT Lara 829 MP (Carl Zeiss Meditec, Berlin, Germany). A fourth lens, the monofocal AcrySof IQ SN60WF (Alcon Inc.) acted as the control. We projected a 520 nm laser light through each submerged lens in a bath of fluorescein solution. A camera mounted on a microscope captured the light that emerged from the IOL. We recorded the IOLs’ point spread function (PSF) to determine the presence of unwanted visual effects. The ray propagation visualization and light intensity profile of the monofocal control showed one distinct focus, while the AcrySof IQ Vivity demonstrated an extended focus area. We observed two distinct foci with each diffractive IOL. We found a lower level of light spread beyond the PSF center for the AcrySof IQ Vivity compared to the diffractive IOLs. In conclusion, we could confirm the extended range of focus for all the EDoF IOL models. However, the non-diffractive AcrySof IQ Vivity appears to have a smoother transition from a far to an intermediate range. We discuss whether, in clinical use, the higher level of spurious light we found in the diffractive designs may translate into increased dysphotopsia. MDPI 2022-11-02 /pmc/articles/PMC9689910/ /pubmed/36359510 http://dx.doi.org/10.3390/diagnostics12112667 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Baur, Isabella D.
Auffarth, Gerd U.
Yan, Weijia
Łabuz, Grzegorz
Khoramnia, Ramin
Visualization of Ray Propagation through Extended Depth-of-Focus Intraocular Lenses
title Visualization of Ray Propagation through Extended Depth-of-Focus Intraocular Lenses
title_full Visualization of Ray Propagation through Extended Depth-of-Focus Intraocular Lenses
title_fullStr Visualization of Ray Propagation through Extended Depth-of-Focus Intraocular Lenses
title_full_unstemmed Visualization of Ray Propagation through Extended Depth-of-Focus Intraocular Lenses
title_short Visualization of Ray Propagation through Extended Depth-of-Focus Intraocular Lenses
title_sort visualization of ray propagation through extended depth-of-focus intraocular lenses
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9689910/
https://www.ncbi.nlm.nih.gov/pubmed/36359510
http://dx.doi.org/10.3390/diagnostics12112667
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