Simulations of decentration and tilt of a supplementary sulcus-fixated intraocular lens in a polypseudophakic combination using ray-tracing software

• Verfasst von: Łabuz, Grzegorz [VerfasserIn]
• Verfasst von: Auffarth, Gerd U. [VerfasserIn]
• Verfasst von: Yan, Weijia [VerfasserIn]
• Verfasst von: Yildirim, Timur Mert [VerfasserIn]
• Verfasst von: Khoramnia, Ramin [VerfasserIn]
• Titel: Simulations of decentration and tilt of a supplementary sulcus-fixated intraocular lens in a polypseudophakic combination using ray-tracing software
• Verf.angabe: Grzegorz Labuz, Gerd U. Auffarth, Weijia Yan, Timur M. Yildirim and Ramin Khoramnia
• E-Jahr: 2021
• Jahr: 2 August 2021
• Umfang: 9 S.
• Fussnoten: Gesehen am 30.09.2021
• Titel Quelle: Enthalten in: Photonics
• Ort Quelle: Basel : MDPI, 2014
• Jahr Quelle: 2021
• Band/Heft Quelle: 8(2021), 8, Artikel-ID 309, Seite 1-9
• ISSN Quelle: 2304-6732
• DOI: doi:10.3390/photonics8080309
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: bag
• Sach-SW: centration
• Sach-SW: eye
• Sach-SW: HOAs
• Sach-SW: image quality
• Sach-SW: implantation
• Sach-SW: lens tilt and decentration
• Sach-SW: mtf
• Sach-SW: polypseudophakia
• Sach-SW: supplementary IOLs
• K10plus-PPN: 1772130141

Abstract

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.