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Optical Performance of a Trifocal IOL and a Novel Extended Depth of Focus IOL Combined With Different Corneal Profiles

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Ruiz Alcocer, Javier and Lorente Velázquez, Amalia and Hernández Verdejo, José Luis and Gracia Pacheco, Pablo, de and Madrid Costa, David (2020) Optical Performance of a Trifocal IOL and a Novel Extended Depth of Focus IOL Combined With Different Corneal Profiles. Journal of Refractive Surgery, 36 (7). pp. 435-441. ISSN 1081-597X

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Official URL: https://doi.org/10.3928/1081597X-20200519-02




Abstract

PURPOSE: To assess the effect of prior myopic ablations on the optical performance of a trifocal diffractive intraocular lens (IOL) and a novel extended depth of focus (EDOF) diffractive design.
METHODS:The novel XACT Mono-EDOF ME4 diffractive IOL (Santen Pharmaceutical) and the trifocal diffractive FineVision IOL (PhysIOL) were analyzed standing alone and combined with a simulated myopic corneal ablation. The optical quality of the IOLs in both situations was evaluated with the PMTF optical bench (LAMBDA-X). The through-focus modulation transfer function (MTF) curves and the MTF at three different focal points (+0.50, 0.00, and −0.50 diopters [D]) were recorded.
RESULTS: The through-focus MTF curves showed three differentiated peaks for the trifocal IOL and two overlapped peaks for the EDOF IOL. The presence of simulated myopic corneal ablations induces a −0.50 D shift on the overall through-focus curves and softens the multifocal properties of both lenses by decreasing the variations through focus of the MTF. For the analysis of the lenses standing alone, the highest MTF values were obtained for an object vergence of 0.00 D. For a simulated myopic corneal ablation, both IOLs showed better optical quality results at −0.50 D.
CONCLUSIONS: The trifocal IOL provides better optical quality at far and near distances when analyzed alone. The EDOF IOL optical properties are more stable when a myopic ablation is introduced. Preoperative calculations of both lenses should consider that prior myopic corneal ablations induce a −0.50 D shift on their far peak quality.


Item Type:Article
Additional Information:

Received: July 17, 2019
Accepted: May 19, 2020

Uncontrolled Keywords:Trifocal lenses; IOL, Intraocular lenses; Myopia; Corneal ablation; Cataract surgery; EDOF IOL
Subjects:Medical sciences > Medicine > Surgery
Medical sciences > Optics
Medical sciences > Optics > Visual perception
ID Code:61959
Deposited On:11 Sep 2020 16:51
Last Modified:11 Sep 2020 16:51

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