gms | German Medical Science

102. Jahrestagung der DOG

Deutsche Ophthalmologische Gesellschaft e. V.

23. bis 26.09.2004, Berlin

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Comparison between correction and induction of high-order aberrations after standard and wavefront-guided LASIK

Meeting Abstract

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  • corresponding author T. Hammer - Department of ophthalmology, University Halle-Wittenberg
  • M. Heynemann - Department of ophthalmology, University Halle-Wittenberg
  • I. Naumann - Department of ophthalmology, University Halle-Wittenberg
  • G. I. W. Duncker - Department of ophthalmology, University Halle-Wittenberg

Evidenzbasierte Medizin - Anspruch und Wirklichkeit. 102. Jahrestagung der Deutschen Ophthalmologischen Gesellschaft. Berlin, 23.-26.09.2004. Düsseldorf, Köln: German Medical Science; 2004. Doc04dogSO.04.09

The electronic version of this article is the complete one and can be found online at: http://www.egms.de/en/meetings/dog2004/04dog449.shtml

Published: September 22, 2004

© 2004 Hammer 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

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Objective

Wavefront-guided LASIK-treatments should reduce high-order aberrations (HOA). But the microkeratome cut as well as the ablation itself induce HOA. Purpose of this study was to investigate the amount of corrected preoperative measured HOA and induction of new HOA.

Methods

25 myopic patients (2 to 7 diopter) were treated by standard and wavefront-guided LASIK. Pre- and postoperative measurements of total ocular aberrations, contrast sensitivity and visual acuity under dim light conditions were performed.

Results

Patients with preoperative increased aberrations of 3. and 4. order and myopia up to 5 diopter showed reduction of wavefront deformation. In cases of higher myopic corrections and lower preoperative spherical aberrations developed an increase of spherical aberrations. The changes of other HOA showed no correlation with the amount of corrected myopia. The comparison of postoperative contrast sensitivity between standard and wavefront-guided LASIK displayed a high variability.

Conclusions

If preoperative aberrations of 3. and 4. order were increased and the myopia is < 6 diopter- wavefront-guided LASIK can reduce total ocular HOA. Aberrometric findings after wavefront-guided LASIK in patients with lower preoperative HOA and higher myopia (> 6 diopter) are comparable with the results after standard treatment.