Optical Performance Of A Non-Diffractive Wavefront-Shaping Extended Range Of Vision Intraocular Lens Combined With Different Corneal Profiles
Published 2022 - 40th Congress of the ESCRS
Reference: FPS09.08 | Type: Free paper | DOI: 10.82333/77vt-te57
Authors: David Madrid-Costa* 1 , Luis Fernandez-Vega-Cueto 2 , Carlos Lisa 2 , Belén Alfonso-Bartolozzi 2 , José F. Alfonso 2
1Optometry and Vision Department. Optics and Optometry Faculty.,Complutense Univerisity of Madrid,Madrid,Spain, 2Cornea & Lens,Fernandez-Vega Universitary Institute,OVIEDO,Spain
Purpose
To assess the effect of prior myopic ablations on the optical performance of a non-diffractive extended range of vision intraocular lens (IOL).
Setting
Fernández-Vega Universitary Institute, Oviedo, Spain
Methods
The non-diffractive extended depth of focus (EDOF) AcrySof IQ VivityTM (Alcon Labs., Inc., USA) were analyzed combined with simulated corneas with different degrees of spherical aberration (SA); Virgin cornea (SA = 0.135 mm for 5.0 mm; reference situation), post-low myopic ablation (SA = 0.249 mm for 5.0 mm) and post-high myopic ablation (SA = 0.540 mm for 5.0 mm). The optical quality in the three situations was evaluated with the PMTF optical bench (LAMBDA-X, software version 1.13.6). The through-focus modulation transfer function (TF-MTF) curves and the MTF were recorded for 4.5 and 3.0 mm of pupil aperture.
Results
The TF- MTF curve in the reference situation showed, for the 4.5 mm pupil, a peak of maximum MTF and thus, a maximum of optical quality at the best focus for distance vision. From that focus power, the MTF decays monotonously. For the 3.00 mm pupil, the IOL optical behaviour significantly changed. The peak of maximum is lower and located at -0.70D. Moreover, the TF-MTF curve showed an extended depth of focus that reaches defocus values of -2.20 D. For a simulated low-myopic corneal ablation the only change was a decrease at the peak of maximum MTF at the distance focus for 4.5mm of the pupil. For a simulated high myopic corneal ablation, the optical quality significantly decreased at all vergences for both pupil sizes.
Conclusions
The EDOF IOL evaluated provides an optimal optical quality at distance an extended depth of focus that reaches defocus values of -2.20 D when was studied in combination with a simulated low-myopic corneal ablation. The optical quality significantly decreased when this EDOF IOL was combined with a simulated high-myopic corneal ablation.