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Xing Y, Liu Y, Li K, Song H, Xu M, zhang J, Liu H, Zhang H, Wang Y. Fabrication and performance evaluation of a design for an extended depth-of-focus intraocular lens based on an improved sinusoidal profile. BIOMEDICAL OPTICS EXPRESS 2024; 15:3932-3949. [PMID: 38867771 PMCID: PMC11166450 DOI: 10.1364/boe.521105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 05/19/2024] [Accepted: 05/19/2024] [Indexed: 06/14/2024]
Abstract
This study presents the fabrication and evaluation of a sinusoidal extended depth-of-focus (EDoF) intraocular lens (IOL) based on our previously proposed design approach. The power, through-focus MTF, and surface profile were measured using commercial instruments. Through-focus images of a United States Air Force (USAF) 1951 resolution target formed by the fabricated IOL were compared with Symfony and AR40E under monochromatic and polychromatic light using optical bench testing. Simulations assessed visual acuity (VA) of a pseudophakic model eye with the EDoF IOL, including evaluation of tilt and decentration effects. Results indicate that the base power, add power, and the through-focus MTF@50 lp/mm of the fabricated IOL at a 3 mm pupil size align with the design specifications. The extended-depth-of-focus and imaging performance for the far vision of the fabricated IOL under both monochromatic and polychromatic light conditions at a 3.0 mm pupil diameter is comparable to that of Symfony. In addition, the fabricated IOL exhibits a similar extended-depth-of-focus for three discrete wavelengths. The pseudophakic model eye with the designed EDoF IOL demonstrates a VA exceeding 0.1 logMAR within a defocus range of 2.44 D. The VA is tolerant to both IOL tilt and decentration. These findings demonstrate the promising potential of the sinusoidal EDoF IOL design for future applications in cataract surgery.
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Affiliation(s)
- Yuwei Xing
- Tianjin Key Laboratory of Micro-scale
Optical Information Science and Technology, Institute of Modern
Optics, Nankai University, Tianjin 300350, China Nankai University, Tianjin
300350, China
| | - Yongji Liu
- Tianjin Key Laboratory of Micro-scale
Optical Information Science and Technology, Institute of Modern
Optics, Nankai University, Tianjin 300350, China Nankai University, Tianjin
300350, China
- Nankai University Eye Institute, Nankai University
Affiliated Eye Hospital, Nankai University, 38 Tongyan Road, Haihe Education Park, Tianjin
300350, China
| | - Kunqi Li
- Tianjin Key Laboratory of Micro-scale
Optical Information Science and Technology, Institute of Modern
Optics, Nankai University, Tianjin 300350, China Nankai University, Tianjin
300350, China
| | - Hui Song
- Tianjin Key Laboratory of Retinal Functions
and Diseases, Tianjin Branch of National Clinical Research Center for
Ocular Disease, Eye Institute and School of Optometry,
Tianjin Medical University Eye Hospital,
Tianjin 300392, China
| | - Mengchen Xu
- Advanced Ophthalmology
Laboratory (AOL), Robotrak Technologies, Nanjing 210000,
China
| | - Jie zhang
- Advanced Ophthalmology
Laboratory (AOL), Robotrak Technologies, Nanjing 210000,
China
| | - Hongliang Liu
- Tianjin Key Laboratory of Micro-scale
Optical Information Science and Technology, Institute of Modern
Optics, Nankai University, Tianjin 300350, China Nankai University, Tianjin
300350, China
| | - Hangjian Zhang
- Tianjin Key Laboratory of Micro-scale
Optical Information Science and Technology, Institute of Modern
Optics, Nankai University, Tianjin 300350, China Nankai University, Tianjin
300350, China
| | - Yan Wang
- Nankai University Eye Institute, Nankai University
Affiliated Eye Hospital, Nankai University, 38 Tongyan Road, Haihe Education Park, Tianjin
300350, China
- Tianjin Key Laboratory of Ophthalmology and
Visual Science, Tianjin Eye Institute,
Tianjin Eye Hospital, 4 Gansu Rd, Tianjin 300020, China
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Clavé L, Faria-Ribeiro M, Millan MS. Chromatic changes in vision with diffractive ophthalmic optics. OPTICS EXPRESS 2024; 32:10348-10361. [PMID: 38571249 DOI: 10.1364/oe.512212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 01/26/2024] [Indexed: 04/05/2024]
Abstract
Diffractive optics is a valuable technique for designing presbyopia-correcting lenses, but its effectiveness is wavelength-dependent. This study investigates the spatio-chromatic alterations in visual resolution associated with diffractive multifocal lenses by using non-invasive, removable diffractive bifocal contact lenses. The study combines theoretical analysis, numerical simulation, and clinical intra-observer experiments to assess visual acuity under various lighting conditions. Results demonstrate the introduction of spatio-chromatic asymmetry and a change in visual acuity under red and blue lights, depending on the operating diffraction order employed in the lens design. The energy distribution of the diffractive contact lens studied favors resolution under red illumination at far distances and under blue illumination at near distances. These findings are consistent with computational simulations and provide insights into the visual changes induced by diffractive ophthalmic lenses.
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Millan MS, Clavé L, Torrents A, Armengol J, Vega F. Spatio-chromatic vision with multifocal diffractive intraocular lens. EYE AND VISION (LONDON, ENGLAND) 2023; 10:32. [PMID: 37525263 PMCID: PMC10391998 DOI: 10.1186/s40662-023-00350-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 06/12/2023] [Indexed: 08/02/2023]
Abstract
BACKGROUND This study aims to detect alterations in the spatio-chromatic pseudophakic vision produced by multifocal diffractive intraocular lenses (IOLs) and provides a physical interpretation. METHODS In vitro characterization of the imaging performance of two diffractive IOLs: AT LISA Tri (Zeiss) and FineVision (PhysIOL) in on-bench model eye illuminated with red (R, 625 nm), green (G, 530 nm) and blue (B, 455 nm) lights. We used the metrics: energy efficiency (EE), area under the modulation transfer function, longitudinal chromatic aberration (LCA), and halo intensity. Through-focus (TF) analysis and calculation of the expected defocus curve under white (W) daylight were included. In vivo visual acuity (VA) of 50 pseudophakics (60 eyes) was assessed under W, R, G, B lights at far and near. Two clinical experiments evaluated LCA and R, G, B TF-EE effects on pseudophakic vision and their relative importance. RESULTS Clinical mean VA values under W light agreed with the predicted values at far and near for both IOLs. LCA measurements and R, G, B TF-EE curves were consistent with their lens design based on the 0th and 1st diffraction orders operative for far and near vision, respectively. LCA effects were compensated at near but noticed at far (- 0.75 D under B light). We detected strong asymmetry in visual resolution depending on the object distance and the illuminating wavelength-red predominance at far, blue predominance at near-in consistency with the TF-EE measurements. CONCLUSIONS Diffractive multifocal IOL designs produce asymmetries in the spatio-chromatic vision of pseudophakics beyond the alterations strictly due to LCA. VA asymmetry for far/near object distance under R and B illumination is clinically detectable in subjects implanted with IOLs with 0th and 1st diffraction orders for far and near vision, respectively. Such VA asymmetry cannot be explained solely from the influence of defocus, as would be derived from a chromatic difference of power, but mainly from the wavelength dependence of the EE.
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Affiliation(s)
- Maria S Millan
- Applied Optics and Image Processing Research Group, Universitat Politècnica de Catalunya-BarcelonaTech, C/ Violinista Vellsolà, 37, Terrassa, 08222, Barcelona, Spain.
| | - Laura Clavé
- Applied Optics and Image Processing Research Group, Universitat Politècnica de Catalunya-BarcelonaTech, C/ Violinista Vellsolà, 37, Terrassa, 08222, Barcelona, Spain
- Mataró Hospital, Consorci Sanitari del Maresme, Barcelona, Spain
| | - Aurora Torrents
- Applied Optics and Image Processing Research Group, Universitat Politècnica de Catalunya-BarcelonaTech, C/ Violinista Vellsolà, 37, Terrassa, 08222, Barcelona, Spain
| | - Jesús Armengol
- Applied Optics and Image Processing Research Group, Universitat Politècnica de Catalunya-BarcelonaTech, C/ Violinista Vellsolà, 37, Terrassa, 08222, Barcelona, Spain
| | - Fidel Vega
- Applied Optics and Image Processing Research Group, Universitat Politècnica de Catalunya-BarcelonaTech, C/ Violinista Vellsolà, 37, Terrassa, 08222, Barcelona, Spain
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Furlan WD, Martínez-Espert A, Montagud-Martínez D, Ferrando V, García-Delpech S, Monsoriu JA. Optical performance of a new design of a trifocal intraocular lens based on the Devil's diffractive lens. BIOMEDICAL OPTICS EXPRESS 2023; 14:2365-2374. [PMID: 37206145 PMCID: PMC10191648 DOI: 10.1364/boe.487812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 04/06/2023] [Accepted: 04/14/2023] [Indexed: 05/21/2023]
Abstract
In this work, we propose a new diffractive trifocal intraocular lens design with focus extension, conceived to provide a high visual performance at intermediate distances. This design is based on a fractal structure known as the "Devil's staircase". To assess its optical performance, numerical simulations have been performed with a ray tracing program using the Liou-Brennan model eye under polychromatic illumination. The simulated through the focus visual acuity was the merit function employed to test its pupil-dependence and its behavior against decentering. A qualitative assessment of the multifocal intraocular lens (MIOL) was also performed experimentally with an adaptive optics visual simulator. The experimental results confirm our numerical predictions. We found that our MIOL design has a trifocal profile, which is very robust to decentration and has low degree of pupil dependence. It performs better at intermediate distances than at near distances and, for a pupil diameter of 3 mm, it works like an EDoF lens over almost the entire defocus range.
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Affiliation(s)
- Walter D. Furlan
- Departamento de Óptica y Optometría y Ciencias de la Visión, Universitat de València, Burjassot, Spain
| | - Anabel Martínez-Espert
- Departamento de Óptica y Optometría y Ciencias de la Visión, Universitat de València, Burjassot, Spain
| | - Diego Montagud-Martínez
- Departamento de Óptica y Optometría y Ciencias de la Visión, Universitat de València, Burjassot, Spain
- Centro de Tecnologías Físicas, Universitat Politècnica de València, Valencia, Spain
| | - Vicente Ferrando
- Centro de Tecnologías Físicas, Universitat Politècnica de València, Valencia, Spain
| | | | - Juan A. Monsoriu
- Centro de Tecnologías Físicas, Universitat Politècnica de València, Valencia, Spain
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Yan W, Auffarth GU, Khoramnia R, Łabuz G. Spectral Effects and Range of Focus in a Multizonal-Refractive Intraocular Lens Compared with a Standard Trifocal Diffractive Design. Ophthalmol Ther 2023; 12:1621-1634. [PMID: 36890349 PMCID: PMC10164215 DOI: 10.1007/s40123-023-00679-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 02/06/2023] [Indexed: 03/10/2023] Open
Abstract
INTRODUCTION This study was performed to compare the optical performance of a multizonal presbyopia-correcting intraocular lens (IOL) and a conventional trifocal model. METHODS The optical quality and simulated visual acuity (VA) of 570 Precizon Presbyopic NVA (OPHTEC BV) and AcrySof IQ PanOptix (Alcon) were compared. The Precizon features a refractive design consisting of alternating optical zones that converge the incident light into two principal foci and a transitional zone for intermediate vision. By contrast, the PanOptix applies a diffractive (non-apodized) profile to achieve trifocality. Simulated VA was derived from the modulation transfer function. Chromatic aberration effects were also studied. RESULTS The diffractive and multizonal-refractive lenses yielded comparable simulated VAs at far focus (0.00 logMAR). All curves showed a reduction in expected VA with an increase in negative defocus. At - 1.0 D, the multizonal-refractive IOL's VA dropped by 0.05 logMAR, but for the diffractive model, it was one line (0.11 logMAR). The multizonal-refractive lens's VA prediction at the secondary peak was 0.03 logMAR-minimally better than the 0.06 logMAR of the diffractive lens at - 2.5 D. The refractive lens exhibited a 24% decrease in polychromatic optical quality due to material dispersion. The performance of PanOptix was more substantially affected, showing a 44% loss at 50 lp/mm at far, with minimal effects at other distances. CONCLUSION The multizonal-refractive lens does not fall short of the established trifocal IOL, and it can be used to extend the visual range of pseudophakic patients. Although the multizonal-refractive lens has lower material dispersion, the diffractive model corrects chromatism beyond far focus.
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Affiliation(s)
- Weijia Yan
- Department of Ophthalmology, The David J. Apple Center for Vision Research, University Hospital Heidelberg, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
| | - Gerd U Auffarth
- Department of Ophthalmology, The David J. Apple Center for Vision Research, University Hospital Heidelberg, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany.
| | - Ramin Khoramnia
- Department of Ophthalmology, The David J. Apple Center for Vision Research, University Hospital Heidelberg, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
| | - Grzegorz Łabuz
- Department of Ophthalmology, The David J. Apple Center for Vision Research, University Hospital Heidelberg, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
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6
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Elsner R, Sievers J, Kunert M, Reiss S, Bohn S, Schünemann M, Stolz H, Guthoff R, Stachs O, Sperlich K. The Rostock Method for Qualitative and Quantitative Evaluation of Intraocular Lenses. Klin Monbl Augenheilkd 2022; 239:1440-1446. [PMID: 36493765 DOI: 10.1055/a-1953-7302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND For quantitative and qualitative evaluation of the imaging properties of IOLs, axial cross-sectional images can be obtained from the 3-dimensional light distribution by means of an optical bench, as is known from light sheet recordings in fluorescein baths. This paper presents a new image-processing algorithm to enhance the quality of generated axial cross-sectional images, and the two methods are then compared. MATERIAL AND METHODS The 3-dimensional point spread function of a diffractive trifocal IOL (AT LISA tri 839MP, Carl Zeiss Meditec AG, Jena, Germany) was recorded on an optical bench developed in Rostock for different pupil diameters. A specially adapted image processing algorithm was then applied to the measurements, allowing through-focus curves to be generated. In addition, cross-sectional images of the IOLs studied were acquired using the light sheet method in a fluorescein bath. RESULTS The study clearly shows the superiority of the newly developed method over the light sheet method in terms of image quality. In addition to the individual focal points, fine focal structures as well as halos can be made visible in the cross-sectional images obtained using the new method. In the generated through-focus curves, 3 intensity peaks can be identified, which represent the near, intermediate and far focus of the tested MIOL and cannot be represented by light sheet methods. CONCLUSION The interaction of the optical bench with the developed image processing algorithm allows a more detailed understanding of the image formation and false light phenomena of IOLs, which was restricted by the technical limitations of the existing light sheet method. In addition, other quantities such as the through-focus curve can be derived quantitatively.
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Affiliation(s)
- Ricardo Elsner
- Klinik und Poliklinik für Augenheilkunde, Universitätsmedizin Rostock, Deutschland.,Interdisziplinäre Fakultät Leben, Licht & Materie, Universität Rostock, Deutschland
| | - Jan Sievers
- Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, Halle, Deutschland
| | - Martin Kunert
- Klinik für Augenheilkunde, Dietrich-Bonhoeffer-Klinikum Neubrandenburg, Deutschland
| | - Stefan Reiss
- Labor für Sehhilfen - Bereich Optik und Technik der Brille, Berliner Hochschule für Technik, Berlin, Deutschland
| | - Sebastian Bohn
- Klinik und Poliklinik für Augenheilkunde, Universitätsmedizin Rostock, Deutschland.,Interdisziplinäre Fakultät Leben, Licht & Materie, Universität Rostock, Deutschland
| | - Melanie Schünemann
- Klinik und Poliklinik für Augenheilkunde, Universitätsmedizin Rostock, Deutschland.,Interdisziplinäre Fakultät Leben, Licht & Materie, Universität Rostock, Deutschland
| | | | - Rudolf Guthoff
- Klinik und Poliklinik für Augenheilkunde, Universitätsmedizin Rostock, Deutschland.,Interdisziplinäre Fakultät Leben, Licht & Materie, Universität Rostock, Deutschland
| | - Oliver Stachs
- Klinik und Poliklinik für Augenheilkunde, Universitätsmedizin Rostock, Deutschland.,Interdisziplinäre Fakultät Leben, Licht & Materie, Universität Rostock, Deutschland
| | - Karsten Sperlich
- Klinik und Poliklinik für Augenheilkunde, Universitätsmedizin Rostock, Deutschland.,Interdisziplinäre Fakultät Leben, Licht & Materie, Universität Rostock, Deutschland
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7
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Baur ID, Auffarth GU, Yan W, Łabuz G, Khoramnia R. Visualization of Ray Propagation through Extended Depth-of-Focus Intraocular Lenses. Diagnostics (Basel) 2022; 12:2667. [PMID: 36359510 PMCID: PMC9689910 DOI: 10.3390/diagnostics12112667] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 10/18/2022] [Accepted: 10/27/2022] [Indexed: 10/14/2023] Open
Abstract
Extended depth-of-focus (EDoF) presbyopia-correcting intraocular lens (IOL) models differ in their optical design and performance. In the laboratory, we compared the ray propagation and light intensity profiles of four IOLs: the non-diffractive AcrySof IQ Vivity (Alcon Inc., Fort Worth, TX, USA) and two diffractive models, Symfony ZXR00 (Johnson & Johnson Vision, Jacksonville, FL, USA) and AT Lara 829 MP (Carl Zeiss Meditec, Berlin, Germany). A fourth lens, the monofocal AcrySof IQ SN60WF (Alcon Inc.) acted as the control. We projected a 520 nm laser light through each submerged lens in a bath of fluorescein solution. A camera mounted on a microscope captured the light that emerged from the IOL. We recorded the IOLs' point spread function (PSF) to determine the presence of unwanted visual effects. The ray propagation visualization and light intensity profile of the monofocal control showed one distinct focus, while the AcrySof IQ Vivity demonstrated an extended focus area. We observed two distinct foci with each diffractive IOL. We found a lower level of light spread beyond the PSF center for the AcrySof IQ Vivity compared to the diffractive IOLs. In conclusion, we could confirm the extended range of focus for all the EDoF IOL models. However, the non-diffractive AcrySof IQ Vivity appears to have a smoother transition from a far to an intermediate range. We discuss whether, in clinical use, the higher level of spurious light we found in the diffractive designs may translate into increased dysphotopsia.
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8
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García S, Salvá L, García-Delpech S, Martínez-Espert A, Ferrando V, Montagud-Martínez D. Polychromatic Assessment of a Refractive Segmented EDOF Intraocular Lens. J Clin Med 2022; 11:jcm11061480. [PMID: 35329805 PMCID: PMC8954764 DOI: 10.3390/jcm11061480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 03/03/2022] [Accepted: 03/04/2022] [Indexed: 11/23/2022] Open
Abstract
This study aimed to evaluate in vitro performance refractive segmented EDOF intraocular lenses under polychromatic light using an optical bench that complies with the ISO 11979-2 Norm. The through focus modulation transfer function (TF-MTF) of the Femtis Comfort LS-313 MF15 (Oculentis GmbH, Berlin, Germany) IOL was evaluated for IOLs with three different base powers. The effect of the asymmetry of the segmented designs was evaluated with 3 different wavelengths and with polychromatic light at a 3.0 mm and 5.0 mm pupil diameter. It was demonstrated that the TF-MTF curves exhibit a bifocal profile that, in practice, results in an EDOF design. As a consequence of the LCA, the TF-MTF values in white light were lower than in monochromatic light. Images of the USAF test chart were obtained to confirm the prediction of the TF-MTFs. We found that Femtis Comfort is a bifocal low-addition IOL and this fact can result in an EDOF effect which was obtained previously in clinical trials. Moreover, we showed that the base power influences the IOL optical quality, which results as more effective for high powers (hyperopic eyes) than for low powers (myopic eyes). The LCA of the segmented refractive design was very low and presumably not clinically relevant.
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Affiliation(s)
- Scott García
- Oftalmedic Salvá, 07013 Palma de Mallorca, Spain; (S.G.); (L.S.)
| | - Luís Salvá
- Oftalmedic Salvá, 07013 Palma de Mallorca, Spain; (S.G.); (L.S.)
| | | | - Anabel Martínez-Espert
- Fundación Aiken, 46004 Valencia, Spain;
- Departamento de Óptica, Optometría y CC de la Visión, Universitat de València, 46100 Valencia, Spain;
| | - Vicente Ferrando
- Centro de Tecnologías Físicas, Universitat Politècnica de València, 46022 Valencia, Spain;
| | - Diego Montagud-Martínez
- Departamento de Óptica, Optometría y CC de la Visión, Universitat de València, 46100 Valencia, Spain;
- Centro de Tecnologías Físicas, Universitat Politècnica de València, 46022 Valencia, Spain;
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9
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In Vitro Chromatic Performance of Three Presbyopia-Correcting Intraocular Lenses with Different Optical Designs. J Clin Med 2022; 11:jcm11051212. [PMID: 35268303 PMCID: PMC8910850 DOI: 10.3390/jcm11051212] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 02/20/2022] [Accepted: 02/22/2022] [Indexed: 01/05/2023] Open
Abstract
Most of the new premium models of intraocular lenses for presbyopia correction use diffractive optics in their optical design. The presence of multiple foci and the difference of the diffractive efficiency for different wavelengths have a great impact in the lens optical performance. In this context, there is a limited information available for clinicians to understand the optical principles that differentiate each design and their potential influence on clinical outcomes. Optical bench studies with polychromatic light are necessary to solve this limitation. In this work, a custom made optical bench was employed to assess with polychromatic light the through the focus optical quality of three different IOL designs: trifocal, EDOF effect; and enhanced monofocal. By using different and complimentary approaches: images of the USAF test, axial PSFs and TF-MTFs, each design revealed its intrinsic features, which were not previously reported for these IOLs models in a comparative way. It was found that the chromatic aberration plays a very important role in the performance of each IOL. Our results could help clinicians to understand the optical principle of each lens and also provide useful information for choosing the lens that best suits the needs of the individual patient.
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10
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Sievers J, Elsner R, Bohn S, Schünemann M, Stolz H, Guthoff RF, Stachs O, Sperlich K. Method for the generation and visualization of cross-sectional images of three-dimensional point spread functions for rotationally symmetric intraocular lenses. BIOMEDICAL OPTICS EXPRESS 2022; 13:1087-1101. [PMID: 35284182 PMCID: PMC8884235 DOI: 10.1364/boe.446869] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 12/21/2021] [Accepted: 12/30/2021] [Indexed: 06/14/2023]
Abstract
Cross-sectional images of three-dimensional point spread functions of intraocular lenses are used to study their image formation. To obtain those, light sheet-based methods are established. Due to the non-negligible thicknesses of the light sheets, the image quality of the cross-sectional images is constrained. To overcome this hurdle, we present a dedicated evaluation algorithm to increase image quality in the post-processing step. Additionally, we compare the developed- with the light sheet method based on our own investigations of a multifocal diffractive intraocular lens conducted in an in-house designed optical bench. The comparative study showed the clear superiority of the newly developed method in terms of image quality, fine structure visibility, and signal-to-noise ratio compared to the light sheet based method. However, since the algorithm assumes a rotationally symmetrical point spread function, it is only suitable for all rotationally symmetrical lenses.
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Affiliation(s)
- Jan Sievers
- Department of Ophthalmology, Rostock University Medical Center, 18057 Rostock, Germany
- Department Life, Light & Matter, University of Rostock, 18055 Rostock, Germany
- Institute of Physics, Martin–Luther–University Halle–Wittenberg, 06120 Halle (Saale), Germany
| | - Ricardo Elsner
- Department of Ophthalmology, Rostock University Medical Center, 18057 Rostock, Germany
- Department Life, Light & Matter, University of Rostock, 18055 Rostock, Germany
| | - Sebastian Bohn
- Department of Ophthalmology, Rostock University Medical Center, 18057 Rostock, Germany
- Department Life, Light & Matter, University of Rostock, 18055 Rostock, Germany
| | - Melanie Schünemann
- Department of Ophthalmology, Rostock University Medical Center, 18057 Rostock, Germany
- Department Life, Light & Matter, University of Rostock, 18055 Rostock, Germany
| | - Heinrich Stolz
- Department Life, Light & Matter, University of Rostock, 18055 Rostock, Germany
- Institute of Physics, University of Rostock, 18055 Rostock, Germany
| | - Rudolf F. Guthoff
- Department of Ophthalmology, Rostock University Medical Center, 18057 Rostock, Germany
- Department Life, Light & Matter, University of Rostock, 18055 Rostock, Germany
| | - Oliver Stachs
- Department of Ophthalmology, Rostock University Medical Center, 18057 Rostock, Germany
- Department Life, Light & Matter, University of Rostock, 18055 Rostock, Germany
| | - Karsten Sperlich
- Department of Ophthalmology, Rostock University Medical Center, 18057 Rostock, Germany
- Department Life, Light & Matter, University of Rostock, 18055 Rostock, Germany
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