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Impressum
Multicenter study of wavefront-guided LASIK
Knorz M. C.
FreeVis LASIK Center, Universitätsklinikum Mannheim, 68135 Mannheim, Germany
Laser in situ Keratomileusis (LASIK) is currently based on subjective
manifest refraction. In a prospective multicenter sutdy we evaluated the
results of wavefront-guided LASIK.
Methods: We measured ocular aberrations with the Zywave aberrometer
(Bausch & Lomb Inc.) and treated 203 eyes with myopia and astigmatism
based on these measurements (SE -4.41 D +/-2.45 D) using the Technolas
217Z excimer laser. Postoperatively, refraction and visual acuity were
evaluated.
Results: Three months postoperatively, 52 eyes were examined to
date. Spectacle-corrected visual acuity was two or more lines lower than
preoperatively in 2%, the same as preoperatively in 47%, one line better
than preoperatively in 35%, and two or more lines better in 16%. For comparison,
following standard-LASIK with the same laser, spectacle-corrected visual
acuity was one line lower than preoperatively in 7%, the same as preoperatively
in 58%, one line better in 32%, and two or more lines better in 4% (results
submitted to the FDA; Bausch & Lomb Inc.).
Conclusion: Our results demonstrate that visual acuity following
wavefront-guided LASIK is comparable to that of standard LASIK. In addtion,
an increase of maximum visual acuity was observed in some cases.