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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| Hauptverfasser: | , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
2 August 2021
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| In: |
Photonics
Year: 2021, Jahrgang: 8, Heft: 8, Pages: 1-9 |
| ISSN: | 2304-6732 |
| DOI: | 10.3390/photonics8080309 |
| Online-Zugang: | lizenzpflichtig lizenzpflichtig 
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| Verfasserangaben: | Grzegorz Labuz, Gerd U. Auffarth, Weijia Yan, Timur M. Yildirim and Ramin Khoramnia |
| Zusammenfassung: | 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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| Beschreibung: | Gesehen am 30.09.2021 |
| Beschreibung: | Online Resource |
| ISSN: | 2304-6732 |
| DOI: | 10.3390/photonics8080309 |