Ray-tracing analysis of intraocular lens power in situ

Journal of Cataract and Refractive Surgery
Thomas Olsen, Mikkel Funding

Abstract

To describe a method for back-solving the power of an intraocular lens (IOL) in situ based on laser biometry and ray-tracing analysis of the pseudophakic eye. University Eye Clinic, Aarhus Hospital, Aarhus, Denmark. Evaluation of diagnostic test or technology. This study comprised pseudophakic eyes with an IOL power ranging from -2.00 to +36.00 diopters (D). Preoperatively, the corneal radius was measured with conventional autokeratometry and the axial length (AL) with optical biometry. After surgery, the position of the IOL was recorded using laser interferometry. Based on the postoperative refraction and the biometric measurements, a ray-tracing analysis was performed back-solving for the power of the IOL in situ. The analysis was performed assuming pupil diameters from 0.0 to 8.0 mm with and without correction for the Stiles-Crawford effect. The study evaluated 767 pseudophakic eyes (583 patients). Assuming a 3.0 mm pupil, the mean prediction error between the labeled and the calculated IOL power (± 1 standard deviation [SD]) was -0.26 D ± 0.65 (SD) (range -2.4 to +1.8 D). The prediction error showed no bias with IOL power or with AL. The calculated IOL power depended on the assumed pupil size and the Stiles-Crawford effect....Continue Reading

References

Apr 1, 1992·Acta Ophthalmologica·M C DunneD A Barnes
May 1, 1990·Journal of Cataract and Refractive Surgery·D R SandersM G Raanan
Jan 1, 1988·Journal of Cataract and Refractive Surgery·J T HolladayR S Ruiz
Jan 1, 1988·Journal of Cataract and Refractive Surgery·T Olsen
Feb 1, 1986·The British Journal of Ophthalmology·T Olsen
Jul 1, 1985·Journal - American Intra-Ocular Implant Society·J T HolladayT L Winn
Feb 1, 1993·Acta Ophthalmologica·T Olsen
Oct 21, 1998·American Journal of Ophthalmology·W DrexlerA F Fercher
Oct 25, 2000·Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie·W HaigisB Schneider
Oct 5, 2001·Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie·W Haigis
Aug 23, 2002·Acta Ophthalmologica Scandinavica·Michiel DubbelmanHennie J Völker-Dieben
Aug 18, 2005·Journal of Cataract and Refractive Surgery·Thomas Olsen, Martin Thorwest
Nov 4, 2005·Vision Research·M DubbelmanG L Van der Heijde
Apr 4, 2007·Acta Ophthalmologica Scandinavica·Thomas Olsen

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Citations

Apr 29, 2014·Journal of Cataract and Refractive Surgery·Thomas Olsen, Peter Hoffmann
May 22, 2013·Journal of Cataract and Refractive Surgery·Peter C Hoffmann, Christoph R Lindemann
Mar 24, 2012·Journal of Cataract and Refractive Surgery·Thomas Olsen
Sep 25, 2014·The British Journal of Ophthalmology·Florian T A KretzGerd U Auffarth
Jul 3, 2013·American Journal of Ophthalmology·Elie SaadH John Shammas
Oct 13, 2016·Korean Journal of Ophthalmology : KJO·Florian Tobias Alwin KretzGerd Uwe Auffarth
Mar 23, 2018·Journal of Current Ophthalmology·Mohammad GhoreyshiAlireza Peyman
Jun 6, 2020·Asia-Pacific Journal of Ophthalmology·Tina XiaLinda M Tsai
Aug 25, 2018·International Ophthalmology·Karim Mahmoud Nabil
Apr 1, 2018·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Simon SchröderAchim Langenbucher
Dec 3, 2021·European Journal of Ophthalmology·Joaquim Fernández-RosésRafael I Barraquer

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