Method for reducing longitudinal spherical aberration of intraocular lenses

Authors

DOI:

https://doi.org/10.15587/1729-4061.2022.251521

Keywords:

crystal, spherical aberration, intraocular lens, polytetrafluoroethylene, vacuum spraying, Zemax, SolidWorks

Abstract

It has been established that of all types of aberrations following the implantation of intraocular lenses, the most significant is spherical, inherent in the spherical optics in various aspects. This paper proposes a method for reducing the longitudinal spherical aberration of intraocular lenses by applying an additional optical layer onto their surface. To reduce spherical aberration, the thickness of a layer of polytetrafluoroethylene (Teflon) was simulated in the programming environment Zemax 13 (USA). Calculations that were performed included refractive indices of the environment and the material of the optics. It was established that in order to reduce the value of the longitudinal spherical aberration of an intraocular lens made of hydrophobic acrylic, the thickness of aTeflon layer should be about 100 nm.

The results of spraying indicate an improvement in the optical characteristics of the lens by reducing longitudinal spherical aberration. When examining different areas of lenses with spraying, it was established that there is no spherical aberration in the lens area. In the 4 mm zone, the spherical aberration indicator decreased by 4 times compared to the original lens. In the region with a diameter of 6 mm, spherical aberration decreased by 0.2. Applying a layer of Teflon reduced Fresnel reflection by 4 times, which improves the sensitivity and contrast of vision. The hydrophobic properties of Teflon provide the anti-adhesive state of the lens, which is a counteraction to the development of secondary cataracts. The SolidWorks 19 software (France) was used to design a model of the lens "NVision Optics" whose aberrations were eliminated as much as possible

Author Biographies

Oleksandr Polishchuk, National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute"

Postgraduate Student

Department of Biomedical Engineering

Vasiliy Kozyar, National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute"

PhD of Medicine, Associate Professor

Department of Biomedical Engineering

Dmytro Zhaboiedov, Bogomolets National Medical University

Doctor of Medical Sciences, Professor

Department of Ophthalmology

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Published

2022-02-25

How to Cite

Polishchuk, O., Kozyar, V., & Zhaboiedov, D. (2022). Method for reducing longitudinal spherical aberration of intraocular lenses. Eastern-European Journal of Enterprise Technologies, 1(5(115), 14–22. https://doi.org/10.15587/1729-4061.2022.251521

Issue

Vol. 1 No. 5(115) (2022): Applied physics

Section

Applied physics

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Copyright (c) 2022 Oleksandr Polishchuk, Vasiliy Kozyar, Dmytro Zhaboiedov

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