Optical performance of progressive addition lenses (PALs) with astigmatic prescription

Abstract The progressive addition lens (PAL) is a spectacle lens design with progressive refractive power changes across the lens surface to provide sharp vision at different viewing distances for patients with reduced accommodative strength. It has gained in popularity not just for presbyopic patie...

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Autores principales:	E. De Lestrange-Anginieur, C. S. Kee
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f38c543b467c45629e09cf49a523b0ac
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spelling	oai:doaj.org-article:f38c543b467c45629e09cf49a523b0ac2021-12-02T10:44:09ZOptical performance of progressive addition lenses (PALs) with astigmatic prescription10.1038/s41598-021-82697-02045-2322https://doaj.org/article/f38c543b467c45629e09cf49a523b0ac2021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-82697-0https://doaj.org/toc/2045-2322Abstract The progressive addition lens (PAL) is a spectacle lens design with progressive refractive power changes across the lens surface to provide sharp vision at different viewing distances for patients with reduced accommodative strength. It has gained in popularity not just for presbyopic patients, but also patients with occupational (office, driving, or digital device) and therapeutic (e.g., myopia control) needs. However, despite the increasing prevalence of astigmatism in adults > 40 years old who rely on PAL correction, no metric is available to reflect the optical variation in PALs with astigmatic prescriptions. Based on recent studies, four novel optical metrics sensitive to variation of refractive power across the lens surface of PALs have been developed. These metrics were used to compare the optical performance of PALs of various prescriptions, designs, and manufacturers. For each lens, the refractive power profile was first measured with a Moire-deflectometry-based instrument.The data was then exported and analyzed using a two-dimensional error map for each of the four metrics. The results revealed significant impacts of astigmatic prescription, providing evidence for the usefulness of these metrics in quantifying the optical performance of PALs for patients with astigmatic prescriptions.E. De Lestrange-AnginieurC. S. KeeNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q E. De Lestrange-Anginieur C. S. Kee Optical performance of progressive addition lenses (PALs) with astigmatic prescription
description	Abstract The progressive addition lens (PAL) is a spectacle lens design with progressive refractive power changes across the lens surface to provide sharp vision at different viewing distances for patients with reduced accommodative strength. It has gained in popularity not just for presbyopic patients, but also patients with occupational (office, driving, or digital device) and therapeutic (e.g., myopia control) needs. However, despite the increasing prevalence of astigmatism in adults > 40 years old who rely on PAL correction, no metric is available to reflect the optical variation in PALs with astigmatic prescriptions. Based on recent studies, four novel optical metrics sensitive to variation of refractive power across the lens surface of PALs have been developed. These metrics were used to compare the optical performance of PALs of various prescriptions, designs, and manufacturers. For each lens, the refractive power profile was first measured with a Moire-deflectometry-based instrument.The data was then exported and analyzed using a two-dimensional error map for each of the four metrics. The results revealed significant impacts of astigmatic prescription, providing evidence for the usefulness of these metrics in quantifying the optical performance of PALs for patients with astigmatic prescriptions.
format	article
author	E. De Lestrange-Anginieur C. S. Kee
author_facet	E. De Lestrange-Anginieur C. S. Kee
author_sort	E. De Lestrange-Anginieur
title	Optical performance of progressive addition lenses (PALs) with astigmatic prescription
title_short	Optical performance of progressive addition lenses (PALs) with astigmatic prescription
title_full	Optical performance of progressive addition lenses (PALs) with astigmatic prescription
title_fullStr	Optical performance of progressive addition lenses (PALs) with astigmatic prescription
title_full_unstemmed	Optical performance of progressive addition lenses (PALs) with astigmatic prescription
title_sort	optical performance of progressive addition lenses (pals) with astigmatic prescription
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/f38c543b467c45629e09cf49a523b0ac
work_keys_str_mv	AT edelestrangeanginieur opticalperformanceofprogressiveadditionlensespalswithastigmaticprescription AT cskee opticalperformanceofprogressiveadditionlensespalswithastigmaticprescription
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Optical performance of progressive addition lenses (PALs) with astigmatic prescription

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