gms | German Medical Science

102. Jahrestagung der DOG

Deutsche Ophthalmologische Gesellschaft e. V.

23. bis 26.09.2004, Berlin

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Surgically-induced astigmatism after post-limbal and scleral tunnel incisions for the implantation of iris-fixated intraocular lenses

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  • corresponding author T. Kasper - Department of Ophthalmology, Johann-Wolfgang-Goethe-University, Frankfurt am Main
  • T. Kohnen - Department of Ophthalmology, Johann-Wolfgang-Goethe-University, Frankfurt am Main

Evidenzbasierte Medizin - Anspruch und Wirklichkeit. 102. Jahrestagung der Deutschen Ophthalmologischen Gesellschaft. Berlin, 23.-26.09.2004. Düsseldorf, Köln: German Medical Science; 2004. Doc04dogSO.04.01

The electronic version of this article is the complete one and can be found online at: http://www.egms.de/en/meetings/dog2004/04dog441.shtml

Published: September 22, 2004

© 2004 Kasper et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by-nc-nd/3.0/deed.en). You are free: to Share – to copy, distribute and transmit the work, provided the original author and source are credited.

Outline

Text

Objective

By varying the distance of the incision to the limbus, the surgical induced astigmatism after intraocular lens (IOL) implantation is influenced.

Methods

In a retrospective study, in 42 eyes of 23 patients (mean age: 35 years) iris-fixated IOLs (Artisan, Ophtec) with 6 mm optical diameter and mean power of -10.6 dpt (-6.5 to -15.5 dpt) were implanted. All implantations were performed through a 6 mm incision at 12 o'clock, either as posterior limbal incision, scleral tunnel incision with 0.5 - 0.75 mm or 1 - 2 mm distance to the limbus. After one month, we determined the amount of surgical induced astigmatism with the Holladay-Cravy-Koch formula, based on videokeratometric measurements. For statistical analysis the Kruskal-Wallis-test was used.

Results

The median amount of surgical induced astigmatism for the posterior limbal incision was 2.02 dpt (n=14), for scleral tunnel with 0.5 - 0.75 mm distance to the limbus 1.29 dpt (n=17) and for scleral tunnel with 1 - 2 mm distance 1.17 dpt (n=11).

Conclusions

In comparison to implantations of Artisan IOLs through posterior limbal incisions, surgical induced astigmatism can distinctly be reduced by implanting the IOL through scleral tunnel incision with 0.5 - 2 mm distance to the limbus.