Laboratory evaluation of the optical properties of two extended-depth-of-focus intraocular lenses
| Autor: | Kyung Heon Lee, Hyeck Soo Son, Sue Hey Chae, Ramin Khoramnia, Chul Young Choi |
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| Rok vydání: | 2019 |
| Předmět: |
Optics and Photonics
Optical quality Prosthesis Design Intraocular lenses Pupil Cornea Optics lcsh:Ophthalmology Extended-depth-of-focus Optical transfer function Medicine Humans Lenses Intraocular Extended depth of focus Depth Perception business.industry General Medicine Models Theoretical Ophthalmology Spherical aberration medicine.anatomical_structure lcsh:RE1-994 Pupil size Spatial frequency business Merge (version control) Research Article |
| Zdroj: | BMC Ophthalmology BMC Ophthalmology, Vol 20, Iss 1, Pp 1-7 (2020) |
| ISSN: | 1471-2415 |
| Popis: | Background To experimentally compare the optical performance of two different Extended-Depth-of-Focus (EDOF) intraocular lenses (IOLs) using a standardized optical bench set-up. Methods In 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. Results At 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. Conclusions Although 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. |
| Databáze: | OpenAIRE |
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