Abstract
BackgroundTo experimentally compare the optical performance of two different Extended-Depth-of-Focus (EDOF) intraocular lenses (IOLs) using a standardized optical bench set-up.MethodsIn this experimental study, following IOLs were assessed: the TECNIS® Symfony ZXR00 (Johnson&Johnson, Santa Ana, USA) and the AT LARA 829MP (Carl Zeiss Meditec, Jena, Germany) IOLs. The through-focus modulation transfer function (MTF) values were measured at a spatial frequency of 50 lp/mm and at aperture sizes of 2, 3, and 4.5 mm. Each IOL was measured while centered using ISO 11979-2 Model 1 (aberration-free) and Model 2 (+ 0.28 μm spherical aberration) corneas. United States Air Force (USAF) target images were also recorded for a qualitative evaluation.ResultsAt 2 mm pupil with ISO1 cornea, the primary and secondary foci of both IOLs appeared to merge, providing an elongated depth of focus. At 3 and 4.5 mm pupil sizes, the through-focus MTF curves of both IOLs showed a bifocal-like V-pattern. While the Symfony IOL showed an overall superior MTF values when measured with the ISO2 cornea, the opposite propensity could be observed with the AT LARA IOL. This optical behavior could be qualitatively confirmed by the USAF target images.ConclusionsAlthough the two EDOF IOLs share similarities in their optical properties, the main difference lies in their optical design and performance with respect to spherical aberration. Such characteristics should be taken into account during IOL and patient selection.
Highlights
To experimentally compare the optical performance of two different Extended-Depth-of-Focus (EDOF) intraocular lenses (IOLs) using a standardized optical bench set-up
The TECNIS® Symfony ZXR00 and AT LARA 829MP are examples of such EDOF IOLs that can allow visual restoration by increasing the depth of focus. They both have a diffractive-refractive optic and share some similarities in their optical properties, they do differ in the optical design. The aim of this laboratory study was to evaluate their optical behavior with respect to spherical aberration and pupil size using both aberrationfree and + 0.28 μm spherical aberration model corneas
The IOL under test is placed in an 11.0 mm diameter IOL holder and inserted into a wet cell filled with balanced salt solution
Summary
To experimentally compare the optical performance of two different Extended-Depth-of-Focus (EDOF) intraocular lenses (IOLs) using a standardized optical bench set-up. Presbyopia-correcting IOLs can be largely categorized depending on the optical principle and the number of foci generated [1,2,3]. Most IOLs use a diffractive-refractive optic, while others utilize different optical designs to provide multifocality [4, 5]. The TECNIS® Symfony ZXR00 and AT LARA 829MP are examples of such EDOF IOLs that can allow visual restoration by increasing the depth of focus. They both have a diffractive-refractive optic and share some similarities in their optical properties, they do differ in the optical design. The aim of this laboratory study was to evaluate their optical behavior with respect to spherical aberration and pupil size using both aberrationfree and + 0.28 μm spherical aberration model corneas
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
