The Impact of IOL Abbe Number on Polychromatic Image Quality of Pseudophakic Eyes

Arthur Bradley,1 Renfeng Xu,1,2 Huachun Wang,2 Matt Jaskulski,1 Xin Hong,3 Nicolette Brink,3 Stephen Van Noy3 1School of Optometry, Indiana University, Bloomington, IN 47405, USA; 2Department of Ophthalmology and Vision Science, University of Nebraska Medical Center, Omaha, NE 68198, USA; 3Alcon Res...

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Autores principales:	Bradley A, Xu R, Wang H, Jaskulski M, Hong X, Brink N, Van Noy S
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2020
Materias:	abbe number chromatic aberrations iol image quality Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/e3e50025d0d14ba292597f50355f3852
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spelling	oai:doaj.org-article:e3e50025d0d14ba292597f50355f38522021-12-02T10:08:47ZThe Impact of IOL Abbe Number on Polychromatic Image Quality of Pseudophakic Eyes1177-5483https://doaj.org/article/e3e50025d0d14ba292597f50355f38522020-08-01T00:00:00Zhttps://www.dovepress.com/the-impact-of-iol-abbe-number-on-polychromatic-image-quality-of-pseudo-peer-reviewed-article-OPTHhttps://doaj.org/toc/1177-5483Arthur Bradley,1 Renfeng Xu,1,2 Huachun Wang,2 Matt Jaskulski,1 Xin Hong,3 Nicolette Brink,3 Stephen Van Noy3 1School of Optometry, Indiana University, Bloomington, IN 47405, USA; 2Department of Ophthalmology and Vision Science, University of Nebraska Medical Center, Omaha, NE 68198, USA; 3Alcon Research Laboratories, Fort Worth, TX 76134-2001, USACorrespondence: Arthur BradleyIndiana University, 800 E Atwater Ave, Bloomington, IN 47405, USATel +1 812-855-2465Fax +1 812-855-7045Email bradley@indiana.eduPurpose: The human eye exhibits large amounts (2.5 diopters) of longitudinal chromatic aberration (LCA). Its impact on polychromatic image quality, however, has been shown experimentally and by computer modeling to be small or absent. We hypothesized that modest changes in pseudophakic LCA created by higher and lower Abbe number materials will have little or no impact on polychromatic image quality in pseudophakic eyes.Materials and Methods: Using published chromatic and monochromatic aberration data from pseudophakic eyes and higher and lower Abbe number materials (37 and 55), we computed monochromatic point spread functions for 21 wavelengths across the visible spectrum. After weighting by either the RGB spectra of a liquid crystal display or by a flat white spectrum, they were weighted by the human spectral sensitivity function (Vλ) before being added to generate polychromatic PSFs.Results: In the absence of monochromatic aberrations, the reduced LCA due to higher Abbe number intraocular lens (IOL) materials resulted in a reduction of 0.08 diopters in the mean defocus generated by LCA. At the retinal plane, the higher Abbe number pseudophakic model produced improvements in polychromatic modulation transfer functions (MTFs) similar to those generated by a 0.05 diopter reduction in spherical defocus. When monochromatic aberrations were added to make the model more representative of actual pseudophakic eyes, the differences in image quality became sub-threshold for human vision or disappeared completely.Conclusion: The anticipated gains in polychromatic image quality from employing higher Abbe number IOL materials with reduced LCA do not materialize in plausible aberrated models of pseudophakic eyes.Keywords: Abbe number, chromatic aberrations, IOL, image qualityBradley AXu RWang HJaskulski MHong XBrink NVan Noy SDove Medical Pressarticleabbe numberchromatic aberrationsiolimage qualityOphthalmologyRE1-994ENClinical Ophthalmology, Vol Volume 14, Pp 2271-2281 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	abbe number chromatic aberrations iol image quality Ophthalmology RE1-994
spellingShingle	abbe number chromatic aberrations iol image quality Ophthalmology RE1-994 Bradley A Xu R Wang H Jaskulski M Hong X Brink N Van Noy S The Impact of IOL Abbe Number on Polychromatic Image Quality of Pseudophakic Eyes
description	Arthur Bradley,1 Renfeng Xu,1,2 Huachun Wang,2 Matt Jaskulski,1 Xin Hong,3 Nicolette Brink,3 Stephen Van Noy3 1School of Optometry, Indiana University, Bloomington, IN 47405, USA; 2Department of Ophthalmology and Vision Science, University of Nebraska Medical Center, Omaha, NE 68198, USA; 3Alcon Research Laboratories, Fort Worth, TX 76134-2001, USACorrespondence: Arthur BradleyIndiana University, 800 E Atwater Ave, Bloomington, IN 47405, USATel +1 812-855-2465Fax +1 812-855-7045Email bradley@indiana.eduPurpose: The human eye exhibits large amounts (2.5 diopters) of longitudinal chromatic aberration (LCA). Its impact on polychromatic image quality, however, has been shown experimentally and by computer modeling to be small or absent. We hypothesized that modest changes in pseudophakic LCA created by higher and lower Abbe number materials will have little or no impact on polychromatic image quality in pseudophakic eyes.Materials and Methods: Using published chromatic and monochromatic aberration data from pseudophakic eyes and higher and lower Abbe number materials (37 and 55), we computed monochromatic point spread functions for 21 wavelengths across the visible spectrum. After weighting by either the RGB spectra of a liquid crystal display or by a flat white spectrum, they were weighted by the human spectral sensitivity function (Vλ) before being added to generate polychromatic PSFs.Results: In the absence of monochromatic aberrations, the reduced LCA due to higher Abbe number intraocular lens (IOL) materials resulted in a reduction of 0.08 diopters in the mean defocus generated by LCA. At the retinal plane, the higher Abbe number pseudophakic model produced improvements in polychromatic modulation transfer functions (MTFs) similar to those generated by a 0.05 diopter reduction in spherical defocus. When monochromatic aberrations were added to make the model more representative of actual pseudophakic eyes, the differences in image quality became sub-threshold for human vision or disappeared completely.Conclusion: The anticipated gains in polychromatic image quality from employing higher Abbe number IOL materials with reduced LCA do not materialize in plausible aberrated models of pseudophakic eyes.Keywords: Abbe number, chromatic aberrations, IOL, image quality
format	article
author	Bradley A Xu R Wang H Jaskulski M Hong X Brink N Van Noy S
author_facet	Bradley A Xu R Wang H Jaskulski M Hong X Brink N Van Noy S
author_sort	Bradley A
title	The Impact of IOL Abbe Number on Polychromatic Image Quality of Pseudophakic Eyes
title_short	The Impact of IOL Abbe Number on Polychromatic Image Quality of Pseudophakic Eyes
title_full	The Impact of IOL Abbe Number on Polychromatic Image Quality of Pseudophakic Eyes
title_fullStr	The Impact of IOL Abbe Number on Polychromatic Image Quality of Pseudophakic Eyes
title_full_unstemmed	The Impact of IOL Abbe Number on Polychromatic Image Quality of Pseudophakic Eyes
title_sort	impact of iol abbe number on polychromatic image quality of pseudophakic eyes
publisher	Dove Medical Press
publishDate	2020
url	https://doaj.org/article/e3e50025d0d14ba292597f50355f3852
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The Impact of IOL Abbe Number on Polychromatic Image Quality of Pseudophakic Eyes

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