Optical Bench Analysis of 2 Depth of Focus Intraocular Lenses

Overview

Journal Biomed Hub

Specialty Biomedical Engineering

Date 2021 Dec 24

PMID 34950668

Citations 6

Authors

Andreas F Borkenstein

Eva-Maria Borkenstein

Holger Luedtke

Ruediger Schmid

Affiliations

Soon will be listed here.

Abstract

Background: The aim of the study was to analyze the objective optical properties of 2 enhanced depth of focus (EDoF) intraocular lenses (IOLs) using optical bench analysis.

Methods: This experimental study investigates 2 new EDoF IOLs, the Alcon AcrySof IQ Vivity and the Bausch & Lomb LuxSmart Crystal, on the optical bench, using OptiSpheric IOL PRO2 (Trioptics, Germany) in order to assess the optical quality according to ISO 11979 with ISO-2 Cornea. IOLs (power 22.0 D) were evaluated regarding modulation transfer function (MTF) at 50 lp/mm and Strehl ratio (SR) using a 3.0-mm and a 4.5-mm aperture. In addition, wavefront measurements were obtained using WaveMaster® IOL 2 device (Trioptics, Germany), and USAF targets were analyzed.

Results: Centered: the MTF (mean) at 50 lp/mm (AcrySof IQ Vivity/LuxSmart Crystal) with 3.0 mm aperture was 0.250/0.257 and with 4.5 mm aperture 0.202/0.243. The SR (mean) with 3.0 mm aperture was 0.261/0.355 and with 4.5 mm aperture 0.176/0.206. Decentered by 1 mm: the MTF (mean) at 50 lp/mm (AcrySof IQ Vivity/LuxSmart Crystal) with 3.0 mm aperture was 0.266/0.247 and with 4.5 mm aperture 0.126/0.215. The SR (mean) with 3.0 mm aperture was 0.272/0.234 and with 4.5 mm aperture 0.133/0.183. Tilted by 5 degree: the MTF (mean) at 50 lp/mm (AcrySof IQ Vivity/LuxSmart Crystal) with 3.0 mm aperture was 0.221/0.360 and with 4.5 mm aperture 0.214/0.229. The SR (mean) with 3.0 mm aperture was 0.232/0.428 and with 4.5 mm aperture 0.225/0.229. The simulated visual function using USAF test targets showed corresponding qualitative results. Wavefront measurements proved a complex optical design. Higher order aberrations in the central part of the optics were modulated up to the 10th order to enhance the range of functional vision to near distance, leaving the peripheral parts of the optics aberration free or as aberration correcting.

Conclusion: The diversity of EDOF IOLs, their optics, and their respective impact on the vision quality must be understood in order to select the appropriate IOL in each individual case. This analysis of new, innovative IOL optics based on increased negative spherical aberration may help the ophthalmic surgeon to select the IOL which meets the individual requirements of the patient for best postoperative outcomes. It seems that there is no perfect IOL that is equally suitable for all patients, but the right choice is an individual, customized approach dealing with patients' expectations.

Citing Articles

Geometry of Modern Presbyopia-Correcting Intraocular Lenses and Changes in Haptic-Capsular Bag Behavior According to Compression and Different Well Diameters: A Bench Study Using Computed Tomography.

Borkenstein A, Borkenstein E Ophthalmol Ther. 2024; 13(12):3059-3077.

PMID: 39384686 PMC: 11564430. DOI: 10.1007/s40123-024-01046-2.

Functional Design Analysis of Two Current Extended-Depth-of-Focus Intraocular Lenses.

Mendroch D, Oberheide U, Altmeyer S Transl Vis Sci Technol. 2024; 13(8):33.

PMID: 39167376 PMC: 11343009. DOI: 10.1167/tvst.13.8.33.

Optical power profiles and aberrations of a non-diffractive wavefront-shaping extended depth of focus intraocular lens.

Garzon N, Gomez-Pedrero J, Albarran-Diego C, Fernandez-Nunez S, Villanueva Gomez-Chacon S, Garcia-Montero M Graefes Arch Clin Exp Ophthalmol. 2024; 262(9):2897-2906.

PMID: 38597962 PMC: 11377664. DOI: 10.1007/s00417-024-06469-y.

Approach to the design of different types of intraocular lenses based on an improved sinusoidal profile.

Xing Y, Liu Y, Li K, Li X, Liu D, Wang Y Biomed Opt Express. 2023; 14(6):2821-2838.

PMID: 37342725 PMC: 10278606. DOI: 10.1364/BOE.491762.

Visual Performance of Eyes with Residual Refractive Errors after Implantation of an Extended Vision Intraocular Lens.

Rementeria-Capelo L, Contreras I, Moran A, Lorente-Hevia P, Marinas L, Ruiz-Alcocer J J Ophthalmol. 2023; 2023:7701390.

PMID: 37180814 PMC: 10175010. DOI: 10.1155/2023/7701390.

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