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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| Main Authors: | , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
2 August 2021
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| In: |
Photonics
Year: 2021, Volume: 8, Issue: 8, Pages: 1-9 |
| ISSN: | 2304-6732 |
| DOI: | 10.3390/photonics8080309 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.3390/photonics8080309 Verlag, lizenzpflichtig, Volltext: https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=DynamicDOIArticle&SrcApp=WOS&KeyAID=10.3390%2Fphotonics8080309&DestApp=DOI&SrcAppSID=C5F6Goh8YQYRTNHQygL&SrcJTitle=PHOTONICS&DestDOIRegistrantName=MDPI+AG 
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| Author Notes: | Grzegorz Labuz, Gerd U. Auffarth, Weijia Yan, Timur M. Yildirim and Ramin Khoramnia |
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| 245 | 1 | 0 | |a Simulations of decentration and tilt of a supplementary sulcus-fixated intraocular lens in a polypseudophakic combination using ray-tracing software |c Grzegorz Labuz, Gerd U. Auffarth, Weijia Yan, Timur M. Yildirim and Ramin Khoramnia |
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| 520 | |a 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 degrees 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 degrees 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 degrees 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. | ||
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