Corneal power after descemet stripping automated endothelial keratoplasty (DSAEK) - Modeling and concept for calculation of intraocular lenses

Zeitschrift für medizinische Physik
Achim LangenbucherTimo Eppig

Abstract

Descemet stripping automated endothelial keratoplasty (DSAEK) is an established treatment option for pathologies of the corneal endothelium. It is typically accompanied with a hyperopic shift in refraction. The purpose of this work is to predict corneal geometry after DSAEK based on model data and to present a concept how to determine corneal power, e.g. for intraocular power calculation to prevent a refractive surprise with a subsequent cataract surgery. Based on data of the Kooijman schematic model eye we simulated a microkeratome cut parallel to the corneal front surface for donor trephination to determine the radial thickness profile of the posterior corneal donor lamella. This donor lamella was tension-neutrally adapted to the back surface of the host and the profile of the cornea after DSAEK was derived and characterized by a quadric surface. Comparison with the curvature of the host without and with donor could resample hyperopic shift which was published in literature. A method was shown how to determine corneal power after DSAEK. From the data of the Kooijman schematic model eye and the donor characteristics central / peripheral corneal thickness was increased by 150 / 250μm due to adaptation of the donor lamella. Geom...Continue Reading

References

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Aug 10, 2013·Zeitschrift für medizinische Physik·Melanie GillnerAchim Langenbucher

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Citations

Nov 26, 2015·Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft·K SpaniolG Geerling
Apr 14, 2016·Zeitschrift für medizinische Physik·Achim Langenbucher, Timo Eppig
Feb 13, 2021·Acta Ophthalmologica·Achim LangenbucherPeter Hoffmann
Aug 5, 2021·Clinical Ophthalmology·Sudi Patel, Larysa Tutchenko

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