Evaluation of actual retinal images produced by misaligned aspheric intraocular lenses in a model eye

Evaluation of actual retinal images produced by misaligned aspheric intraocular lenses in a model eye

Takashi Fujikado,1 Makoto Saika2 1Department of Applied Visual Science, Osaka University Graduate School of Medicine, Osaka, Japan; 2Research and Development Department of Topcon Corporation, Tokyo, Japan Purpose: To examine the effect of misalignment (decentration and tilt) of intraocular lenses...

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Autores principales: Fujikado T, Saika M
Formato: article
Lenguaje:EN
Publicado: Dove Medical Press 2014
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Ophthalmology
RE1-994
Acceso en línea:https://doaj.org/article/73b01cef5f334d94aa87bb9ef758b3e1
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spelling oai:doaj.org-article:73b01cef5f334d94aa87bb9ef758b3e12021-12-02T01:25:57ZEvaluation of actual retinal images produced by misaligned aspheric intraocular lenses in a model eye1177-5483https://doaj.org/article/73b01cef5f334d94aa87bb9ef758b3e12014-11-01T00:00:00Zhttp://www.dovepress.com/evaluation-of-actual-retinal-images-produced-by-misaligned-aspheric-in-peer-reviewed-article-OPTHhttps://doaj.org/toc/1177-5483 Takashi Fujikado,1 Makoto Saika2 1Department of Applied Visual Science, Osaka University Graduate School of Medicine, Osaka, Japan; 2Research and Development Department of Topcon Corporation, Tokyo, Japan Purpose: To examine the effect of misalignment (decentration and tilt) of intraocular lenses (IOLs) on retinal image quality using a water-immersed model eye with corneal spherical aberration adjusted to the values found in normal human eyes (spherical aberration 0.25 µm; pupil diameter 6 mm).Methods: Three types of IOL holders were prepared. The first was without decentration or tilt, the second had a decentration of 0.5 mm, and the third had a tilt of 5.0°. One spherical IOL and three aspherical IOLs, each with a power of +20 D, were set in the holders and their optical properties (wave front aberration, defocused modulation transfer function, defocused point spread function, and Landolt ring simulations) were compared.Results: Coma aberrations generated by misaligned IOLs were related to the spherical aberration corrective power of the IOLs. Landolt ring simulations show that the depth of focus increased as spherical aberration increased and that the retinal image quality was degraded by increases in coma aberration.Conclusion: Coma aberration was generated by IOLs with a large degree of spherical aberration correction, leading to reduced retinal image quality when the IOL was misaligned. This suggests that, in a clinical setting, the quality of vision might be improved by reducing the degree of coma aberration using IOLs that retain, or minimally correct, spherical aberration. Keywords: coma aberration, decentration, misalignment, spherical aberration, tiltFujikado TSaika MDove Medical PressarticleOphthalmologyRE1-994ENClinical Ophthalmology, Vol 2014, Iss default, Pp 2415-2423 (2014)
institution DOAJ
collection DOAJ
language EN
topic Ophthalmology
RE1-994
spellingShingle Ophthalmology
RE1-994
Fujikado T
Saika M
Evaluation of actual retinal images produced by misaligned aspheric intraocular lenses in a model eye
description Takashi Fujikado,1 Makoto Saika2 1Department of Applied Visual Science, Osaka University Graduate School of Medicine, Osaka, Japan; 2Research and Development Department of Topcon Corporation, Tokyo, Japan Purpose: To examine the effect of misalignment (decentration and tilt) of intraocular lenses (IOLs) on retinal image quality using a water-immersed model eye with corneal spherical aberration adjusted to the values found in normal human eyes (spherical aberration 0.25 µm; pupil diameter 6 mm).Methods: Three types of IOL holders were prepared. The first was without decentration or tilt, the second had a decentration of 0.5 mm, and the third had a tilt of 5.0°. One spherical IOL and three aspherical IOLs, each with a power of +20 D, were set in the holders and their optical properties (wave front aberration, defocused modulation transfer function, defocused point spread function, and Landolt ring simulations) were compared.Results: Coma aberrations generated by misaligned IOLs were related to the spherical aberration corrective power of the IOLs. Landolt ring simulations show that the depth of focus increased as spherical aberration increased and that the retinal image quality was degraded by increases in coma aberration.Conclusion: Coma aberration was generated by IOLs with a large degree of spherical aberration correction, leading to reduced retinal image quality when the IOL was misaligned. This suggests that, in a clinical setting, the quality of vision might be improved by reducing the degree of coma aberration using IOLs that retain, or minimally correct, spherical aberration. Keywords: coma aberration, decentration, misalignment, spherical aberration, tilt
format article
author Fujikado T
Saika M
author_facet Fujikado T
Saika M
author_sort Fujikado T
title Evaluation of actual retinal images produced by misaligned aspheric intraocular lenses in a model eye
title_short Evaluation of actual retinal images produced by misaligned aspheric intraocular lenses in a model eye
title_full Evaluation of actual retinal images produced by misaligned aspheric intraocular lenses in a model eye
title_fullStr Evaluation of actual retinal images produced by misaligned aspheric intraocular lenses in a model eye
title_full_unstemmed Evaluation of actual retinal images produced by misaligned aspheric intraocular lenses in a model eye
title_sort evaluation of actual retinal images produced by misaligned aspheric intraocular lenses in a model eye
publisher Dove Medical Press
publishDate 2014
url https://doaj.org/article/73b01cef5f334d94aa87bb9ef758b3e1
work_keys_str_mv AT fujikadot evaluationofactualretinalimagesproducedbymisalignedasphericintraocularlensesinnbspanbspmodeleye
AT saikam evaluationofactualretinalimagesproducedbymisalignedasphericintraocularlensesinnbspanbspmodeleye
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