Article (Scientific journals)
Topography and Longitudinal Chromatic Aberration characterizations of Refractive-Diffractive Multifocal IOLs
Loicq, Jerôme; Willet, Nicolas; Gatinel, Damien
2019In Journal of Cataract and Refractive Surgery
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Keywords :
LCA; chromatic aberration; IOL
Abstract :
[en] Purpose Most optical systems present chromatic aberration quantified along the optical axis by the longitudinal chromatic aberration (LCA). LCA is controlled by the biomaterial Abbe number combined with diffractive effects, driven by the IOL topography. This paper experimentally aims at describing in vitro the effect of LCA in diffractive multifocal IOLs, with the help of dedicated optical benches and topographic characterization. Setting Centre Spatial de Liege. Design Optical and topology analysis of various Multifocal diffractive intraocular lenses. Methods Seven diffractive multifocal lenses, available on the market and exhibiting different diffractive profiles, made from various biomaterials, were characterized under different wavelengths. Results Through-focus Modulation Transfer Function (MTF) curves and IOL diffraction efficiency depends on the incident light wavelength. In this paper, we investigated the topology properties of various Multifocal intraocular lenses and correlated their characteristics to their optical behavior for various wavelengths. Chromatic properties and their origins were then compared. As expected, diffractive and refractive effects were found to act in opposite ways, and could be partially or completely compensated. Conclusions The longitudinal chromatic aberration of each of the lenses was evaluated in vitro. In most of the MIOLs studied, some of the foci were found to be refractive, while others were diffractive. Although the results were not extrapolated to clinical relevance , it was shown, in some of the cases, that LCA could be fully compensated.
Disciplines :
Physical, chemical, mathematical & earth Sciences: Multidisciplinary, general & others
Author, co-author :
Loicq, Jerôme ;  Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Willet, Nicolas ;  Université de Liège - ULiège > Département de chimie (sciences) > Nanochimie et systèmes moléculaires
Gatinel, Damien;  Fondation Rothschild Hospital > CEROC
Language :
English
Title :
Topography and Longitudinal Chromatic Aberration characterizations of Refractive-Diffractive Multifocal IOLs
Publication date :
08 June 2019
Journal title :
Journal of Cataract and Refractive Surgery
ISSN :
0886-3350
eISSN :
1873-4502
Publisher :
Elsevier, Netherlands
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 17 September 2019

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