gms | German Medical Science

102. Jahrestagung der DOG

Deutsche Ophthalmologische Gesellschaft e. V.

23. bis 26.09.2004, Berlin

LASIK results with 3rd generation refractive excimer laser

Meeting Abstract

  • corresponding author O. Kermani - Ocumax Augenlaserzentrum Köln, Köln
  • U. Oberheide - Laserforum Köln e.V., Köln
  • K. Schmiedt - Ocumax Augenlaserzentrum Köln, Köln
  • G. Gerten - Ocumax Augenlaserzentrum Köln, Köln

Evidenzbasierte Medizin - Anspruch und Wirklichkeit. 102. Jahrestagung der Deutschen Ophthalmologischen Gesellschaft. Berlin, 23.-26.09.2004. Düsseldorf, Köln: German Medical Science; 2004. Doc04dogFR.08.11

Die elektronische Version dieses Artikels ist vollständig und ist verfügbar unter: http://www.egms.de/de/meetings/dog2004/04dog232.shtml

Veröffentlicht: 22. September 2004

© 2004 Kermani et al.
Dieser Artikel ist ein Open Access-Artikel und steht unter den Creative Commons Lizenzbedingungen (http://creativecommons.org/licenses/by-nc-nd/3.0/deed.de). Er darf vervielf&aauml;ltigt, verbreitet und &oauml;ffentlich zug&aauml;nglich gemacht werden, vorausgesetzt dass Autor und Quelle genannt werden.


Gliederung

Text

Objective

The 3rd and latest generation of refractive excimer lasers comprises a series of new features that promises better refractive results in LASIK surgery. This prospective study follows LASIK treatments of hyperopia, myopia and astigmatism.

Methods

300 eyes with a pre-op refraction from +3.0D spherical equivalent (SEQ) to -10.0D SE (Astigm. max.: 4.0 Cyl) were treated (bilateral) with the NIDEK EC 5000 CXII Excimer Laser. Pre-op the NIDEK OPD was used to evaluate corneal topography, aberrometry as well as objective Refractometry and videoscopic iris-pattern-analysis in upright position in one take on one instrument. FinalFit program was used to create a optimized and customized aspheric ablation profiles. Maximum depth of segmental ablations of higher order aberrations was set to 10 microns. Intra-op the safed iris-pattern was used to align the axis if the laser beam in astigmatic treatments in order to prevent cyclotorsion errors. XY-centering, usually was set on the center of the pupil. Only when a significant offset was present to the visual axis, as detectable in the OPD measurement, the visual axis was taken as target for beam centering. Eyetracking was at 200Hz rate. The microkeratome used was the MK2000 from NIDEK. Follow-up reaches as far as 3 months at the moment.

Results

The mean post-op SEQ for 283 eyes was -0.01D (±0.49D StDev). Regression between the first week and the third month was 0.18D. The refractive outcome after 3 months was 81% within ±0.5D and 96% within ±1.0D of target refraction. 8% of the eyes lost one line of best corrected visual acuity (BCVA). No eye lost more than one line. 27% of the eyes gained one line (4% gained 2 lines) of BCVA. The results presented here do not include any retreatments. Complications noted were: early flap-displacement (1.2%), incomplete cut (0.8%), free cap (0.4%), flap folds (5.4%), epithelial defects with the need of contact lens coverage (8.4%), epithelial ingrowth (3.2%). There was no case of scar formation, infection or inflammation. At this time no keratektasia was detectable.

Conclusions

The 3rd and latest refractive excimer laser generation creates good refractive results with a high standard of safety.