Beam-Shaping Extended Depth of Focus Intraocular Lens: Optical Assessment With Corneas of Increasing Spherical Aberration



Downloads per month over past year

Madrid Costa, David and Fernández Vega-Cueto, Luis and Azor Morón, Juan A. and Vega Lerin, Fidel and Millán García-Varela, María Sagrario and Alfonso, José F. (2023) Beam-Shaping Extended Depth of Focus Intraocular Lens: Optical Assessment With Corneas of Increasing Spherical Aberration. Journal of Refractive Surgery, 39 (2). pp. 95-103. ISSN 1081-597X

[thumbnail of 1081597X-20221215-02.pdf] PDF
Restringido a Repository staff only


Official URL:


PURPOSE:To assess the optical quality and halo formation of a beam-shaping extended depth-of-focus (EDOF) intraocular lens (IOL) (AcrySof IQ Vivity; Alcon Laboratories, Inc) with corneas of long-range spherical aberration (SA) such as those resulting from myopic laser ablations.
METHODS:The optical quality of the EDOF IOL and a reference monofocal IOL was evaluated with three corneas (A, B, and C, with SA =+0.135, +0.290, +0.540 µm, respectively, for a 5.15-mm pupil at the IOL plane). The through-focus modulation transfer function area (MTFa) curves were obtained between −5.00 and +2.00 diopters (D) defocus range. The halo was also assessed with the three corneas.
RESULTS:Through-focus MTFa curves for a 4.5-mm IOL pupil showed a slight decrease in the maximum MTFa value provided by the EDOF IOL compared to the monofocal IOL in the three corneal situations (A: 45.9 vs 38.6 units; B: 41.1 vs 33.1 units, and C: 26.9 vs 23.8 units). For the 3.0-mm pupil, the EDOF IOL also had lower maximum MTFa than the monofocal IOL; however, the depth-of-focus increased to −2.20 D. With corneas A and B, the halo induced was of low energy with both IOLs. With cornea C, the EDOF IOL created a much larger and intense halo.
CONCLUSIONS:The EDOF IOL provided a good distance optical performance and an extended range of focus of approximately 2.00 D, with a halo of low intensity when evaluated with a corneal SA similar to the one induced by a low to moderate myopic ablation. With a high myopic ablation, the halo induced would be of considerable size and energy.

Item Type:Article
Additional Information:

Submitted: August 24, 2022; Accepted: December 15, 2022

Uncontrolled Keywords:Intraocular lens; Aberration; Spherical aberration; Cornea; Laser ablations; Optical quality; IOLs
Subjects:Medical sciences > Optics
Medical sciences > Optics > Visual perception
Medical sciences > Optics > Optical materials
ID Code:76695
Deposited On:17 Feb 2023 19:58
Last Modified:17 Feb 2023 19:58

Origin of downloads

Repository Staff Only: item control page