J Korean Ophthalmol Soc.  2006 May;47(5):806-811.

Clinical Outcomes of Wavefront-guided LASIK using the Fourier Algorithm: 6-Month Follow-up

• Kim MJ
• Kim HJ
• Joo CK

Abstract

PURPOSE: We evaluate the clinical outcomes after wavefront-guided LASIK using the Fourier algorithm.
METHODS
The uncorrected visual acuity (UCVA), best corrected visual acuity (BCVA), manifest refraction measured with auto refractometer, spherical aberration, coma, trefoil, total high order aberrations and contrast sensitivity of daytime and nighttime in 23 eyes of 13 patients who had undergone wavefront-guided LASIK using the Fourier algorithm preoperatively and at 1 day, 1 week, 1 month, 2 months and 6 months postoperatively.
RESULTS
In the wavefront-guided LASIK using the Fourier algorithm, the preoperative UCVA was 0.13+/-0.10 and increased to 1.02+/-0.29 (p=0.000) at 6 months postoperative, the postoperative spherical equivalent was -6.48+/-1.68D and 1.02+/-0.29 (p=0.000) at 6 months postopertive. The total high order aberration was 0.324+/-0.107 preoperative and 0.338+/-0.167 (p=0.810) at 6 months postoperative in wavefront-guided LASIK using the Fourier algorithm. Preoperative daytime contrast sensitivity increased preoperative from 0.75+/-0.24 to 1.11+/-0.35 (p=0.026) at 12 cpd, and that at 6-month preoperative increased from 1.05+/-0.26 to 1.41+/-0.41 (p=0.003) at 7.5 cpd and from 1.45+/-0.34 to 1.69+/-0.42 (p=0.028) at 4.8 cpd.
CONCLUSIONS
The clinical outcomes of wavefront-guided LASIK using the Fourier algorithm after 6 months were stable visual acuity, no increase in high order aberration and no increase in contrast sensitivity.

Keyword

Contrast sensitivity; Fourier; High order aberration; Wavefront-guided LASIK; Zernike

MeSH Terms

Coma
Contrast Sensitivity
Follow-Up Studies*
Humans
Keratomileusis, Laser In Situ*
Lotus
Visual Acuity