Simulations of Decentration and Tilt of a Supplementary Sulcus-Fixated Intraocular Lens in a Polypseudophakic Combination Using Ray-Tracing Software
This study aimed to assess image quality after the tilt and decentration of supplementary intraocular lenses (IOLs) in a two-lens configuration. One was designed for sulcus fixation with a nominal power range of 1D–10D and was combined with a capsular fixation 20D IOL. The optical performance of a r...
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| Format: | Article |
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MDPI AG
2021-08-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/8/8/309 |
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| author | Grzegorz Łabuz Gerd U. Auffarth Weijia Yan Timur M. Yildirim Ramin Khoramnia |
| author_facet | Grzegorz Łabuz Gerd U. Auffarth Weijia Yan Timur M. Yildirim Ramin Khoramnia |
| author_sort | Grzegorz Łabuz |
| collection | DOAJ |
| description | This study aimed to assess image quality after the tilt and decentration of supplementary intraocular lenses (IOLs) in a two-lens configuration. One was designed for sulcus fixation with a nominal power range of 1D–10D and was combined with a capsular fixation 20D IOL. The optical performance of a ray-tracing model was tested under IOL misalignment through the area under the modulation transfer function (MTFa) and wave aberrations. Tilting by 10° resulted in a 4% reduction of the MTFa for a 10D IOL as compared to 9% for the 20D lens. The two models demonstrated good tolerance to a 1 mm decentration; as for the 10D sulcus-fixated lens, the MTFa loss was 2%, and 4% for the capsular fixation lens. Coma and astigmatism increased three- and four-fold, respectively, after a 10° tilt compared to the aberration level induced by the 1 mm decentration. Both analyses showed a trend towards a lower MTF impact and fewer optical errors with decreasing nominal power. In conclusion, when misaligned, low-power sulcus-fixated IOLs might retain their good optical quality. An extreme tilt of 10° has a more detrimental effect on the IOL performance than a 1 mm decentration. The proper alignment of a high-power capsular fixation lens is important in achieving a desirable postoperative outcome. |
| first_indexed | 2024-03-10T08:28:49Z |
| format | Article |
| id | doaj.art-f12d77f15557428c9b4fee171fa4958d |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-10T08:28:49Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-f12d77f15557428c9b4fee171fa4958d2023-11-22T09:16:24ZengMDPI AGPhotonics2304-67322021-08-018830910.3390/photonics8080309Simulations of Decentration and Tilt of a Supplementary Sulcus-Fixated Intraocular Lens in a Polypseudophakic Combination Using Ray-Tracing SoftwareGrzegorz Łabuz0Gerd U. Auffarth1Weijia Yan2Timur M. Yildirim3Ramin Khoramnia4The David J Apple Center for Vision Research, Department of Ophthalmology, University Hospital Heidelberg, INF 400, 69120 Heidelberg, GermanyThe David J Apple Center for Vision Research, Department of Ophthalmology, University Hospital Heidelberg, INF 400, 69120 Heidelberg, GermanyThe David J Apple Center for Vision Research, Department of Ophthalmology, University Hospital Heidelberg, INF 400, 69120 Heidelberg, GermanyThe David J Apple Center for Vision Research, Department of Ophthalmology, University Hospital Heidelberg, INF 400, 69120 Heidelberg, GermanyThe David J Apple Center for Vision Research, Department of Ophthalmology, University Hospital Heidelberg, INF 400, 69120 Heidelberg, GermanyThis study aimed to assess image quality after the tilt and decentration of supplementary intraocular lenses (IOLs) in a two-lens configuration. One was designed for sulcus fixation with a nominal power range of 1D–10D and was combined with a capsular fixation 20D IOL. The optical performance of a ray-tracing model was tested under IOL misalignment through the area under the modulation transfer function (MTFa) and wave aberrations. Tilting by 10° resulted in a 4% reduction of the MTFa for a 10D IOL as compared to 9% for the 20D lens. The two models demonstrated good tolerance to a 1 mm decentration; as for the 10D sulcus-fixated lens, the MTFa loss was 2%, and 4% for the capsular fixation lens. Coma and astigmatism increased three- and four-fold, respectively, after a 10° tilt compared to the aberration level induced by the 1 mm decentration. Both analyses showed a trend towards a lower MTF impact and fewer optical errors with decreasing nominal power. In conclusion, when misaligned, low-power sulcus-fixated IOLs might retain their good optical quality. An extreme tilt of 10° has a more detrimental effect on the IOL performance than a 1 mm decentration. The proper alignment of a high-power capsular fixation lens is important in achieving a desirable postoperative outcome.https://www.mdpi.com/2304-6732/8/8/309supplementary IOLslens tilt and decentrationMTFHOAspolypseudophakia |
| spellingShingle | Grzegorz Łabuz Gerd U. Auffarth Weijia Yan Timur M. Yildirim Ramin Khoramnia Simulations of Decentration and Tilt of a Supplementary Sulcus-Fixated Intraocular Lens in a Polypseudophakic Combination Using Ray-Tracing Software Photonics supplementary IOLs lens tilt and decentration MTF HOAs polypseudophakia |
| title | Simulations of Decentration and Tilt of a Supplementary Sulcus-Fixated Intraocular Lens in a Polypseudophakic Combination Using Ray-Tracing Software |
| title_full | Simulations of Decentration and Tilt of a Supplementary Sulcus-Fixated Intraocular Lens in a Polypseudophakic Combination Using Ray-Tracing Software |
| title_fullStr | Simulations of Decentration and Tilt of a Supplementary Sulcus-Fixated Intraocular Lens in a Polypseudophakic Combination Using Ray-Tracing Software |
| title_full_unstemmed | Simulations of Decentration and Tilt of a Supplementary Sulcus-Fixated Intraocular Lens in a Polypseudophakic Combination Using Ray-Tracing Software |
| title_short | Simulations of Decentration and Tilt of a Supplementary Sulcus-Fixated Intraocular Lens in a Polypseudophakic Combination Using Ray-Tracing Software |
| title_sort | simulations of decentration and tilt of a supplementary sulcus fixated intraocular lens in a polypseudophakic combination using ray tracing software |
| topic | supplementary IOLs lens tilt and decentration MTF HOAs polypseudophakia |
| url | https://www.mdpi.com/2304-6732/8/8/309 |
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