Chromatic aberration in patients implanted with hydrophilic and hydrophobic monofocal and FineVision trifocal IOLs measured in vivo

Session Details

Session Title: Biometry & Quality of Vision

Session Date/Time: Tuesday 25/09/2018 | 08:00-10:30

Paper Time: 09:30

Venue: Room A2

First Author: : S.Marcos SPAIN

Co Author(s): :    M. Vinas   A. Gonzalez-Ramos   S. Aissati   C. Dorronsoro   N. Garzon   F. Poyales     

Abstract Details

Purpose:

Longitudinal Chromatic Aberration (LCA) in pseudophakic patients depends on the IOL optical design, and the dispersion properties of the IOL material and of the ocular media. We measured LCA in patients implanted with hydrophilic and hydrophobic monofocal and diffractive FineVision Trifocal IOLs (PhysIOL, Liege).

Setting:

Experimental measurements at the Visual Optics & Biophotonics Lab, Institute of Optics, Madrid, Spain; Surgeries at IOA Madrid Innova Ocular, Madrid, Spain.

Methods:

LCA was obtained in 22 patients/44 eyes: 9 patients (73.92±4.28yrs;) with PhysIOL monofocal aspheric IOLs, hydrophilic (Poday) in one eye/hydrophobic (Podeye) in the contralateral eye; 10 patients (66.42±3.8yrs) with FineVision Pod F (Trifocal hydrophilic); 4 patients (61.5±4.90yrs) with FineVision Pod F GF (Trifocal hydrophobic). Measurements were performed in a multichannel polychromatic AO-system. A supercontinuum-laser (480-700nm) illuminated a DLP displaying a Maltese-Cross stimulus. For each wavelength (randomly presented), the patient focused the stimulus using a Badal-optometer (3 repetitions/wavelength). Monofocal IOLs were evaluated for far; Trifocal IOLs for far/intermediate/near. LCA was estimated from 2nd-order polynomial fittings of chromatic-defocus curves.

Results:

Psychophysical LCA with monofocal/Poday was: 1.21±0.08 D; with monofocal/Podeye was: 1.37±0.08 D; with FineVision/Pod F was: 0.82±0.05 D (far), 0.27±0.15 D (intermediate) & 0.15±0.15 D (near) and with FineVision/Pod F GF was: 1.08±0.15 D (far), 0.67±0.3 D (intermediate), & 0.41±0.25 D (near).

Conclusions:

LCA with the hydrophobic material is slightly, but significantly higher than with hydrophilic material both in monofocal and trifocal lOLs for far vision, with values of the same order of magnitude or lower than LCA in the phakic eye. LCA decreases for intermediate and near vision in trifocal IOLs. The diffractive component in multifocal IOLs allows modulating the chromatic aberration of the eye at different distances.

Financial Disclosure:

... research is funded, fully or partially, by a competing company