In vivo chromatic aberration in eyes implanted with intraocular lenses

Perez-Merino, Pablo, Dorronsoro, Carlos, Llorente, Lourdes, Duran, Sonia, Jimenez-Alfaro, Ignacio and Marcos, Susana 2013, In vivo chromatic aberration in eyes implanted with intraocular lenses, Investigative ophthalmology & visual science, vol. 54, no. 4, pp. 2654-2661, doi: 10.1167/iovs.13-11912.

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Title In vivo chromatic aberration in eyes implanted with intraocular lenses
Author(s) Perez-Merino, Pablo
Dorronsoro, Carlos
Llorente, LourdesORCID iD for Llorente, Lourdes
Duran, Sonia
Jimenez-Alfaro, Ignacio
Marcos, Susana
Journal name Investigative ophthalmology & visual science
Volume number 54
Issue number 4
Start page 2654
End page 2661
Total pages 8
Publisher Association for Research in Vision and Ophthalmology
Place of publication Rockville, Md.
Publication date 2013-04-12
ISSN 0146-0404
Keyword(s) longitudinal chromatic aberration
intraocular lens
Summary Purpose. To measure in vivo and objectively the monochromatic aberrations at different wavelengths, and the chromatic difference of focus between green and infrared wavelengths in eyes implanted with two models of intraocular lenses (IOL).

Methods. Eighteen eyes participated in this study: nine implanted with Tecnis ZB99 1-Piece acrylic IOL and nine implanted with AcrySof SN60WF IOL. A custom-developed laser ray tracing (LRT) aberrometer was used to measure the optical aberrations, at 532 nm and 785 nm wavelengths. The monochromatic wave aberrations were described using a fifth-order Zernike polynomial expansion. The chromatic difference of focus was estimated as the difference between the equivalent spherical errors corresponding to each wavelength.

Results. Wave aberration measurements were highly reproducible. Except for the defocus term, no significant differences in high order aberrations (HOA) were found between wavelengths. The average chromatic difference of focus was 0.46 ± 0.15 diopters (D) in the Tecnis group, and 0.75 ± 0.12 D in the AcrySof group, and the difference was statistically significant (P < 0.05). Chromatic difference of focus in the AcrySof group was not statistically significantly different from the Longitudinal chromatic aberration (LCA) previously reported in a phakic population (0.78 ± 0.16 D). The impact of LCA on retinal image quality (measured in terms of Strehl ratio) was drastically reduced when considering HOA and astigmatism in comparison with a diffraction-limited eye, yielding the differences in retinal image quality between Tecnis and AcrySof IOLs not significant.

Conclusions. LRT aberrometry at different wavelengths is a reproducible technique to evaluate the chromatic difference of focus objectively in eyes implanted with IOLs. Replacement of the crystalline lens by the IOL did not increase chromatic difference of focus above that of phakic eyes in any of the groups. The AcrySof group showed chromatic difference of focus values very similar to physiological values in young eyes.
Language eng
DOI 10.1167/iovs.13-11912
Field of Research 179999 Psychology and Cognitive Sciences not elsewhere classified
Socio Economic Objective 970117 Expanding Knowledge in Psychology and Cognitive Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
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Document type: Journal Article
Collections: Faculty of Health
School of Medicine
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