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E.S. Loft, C.S. Banning, K. Vrochopoulos, J.B. Randleman, R.D. Stulting; Higher Order Wavefront Aberration Changes After LASIK . Invest. Ophthalmol. Vis. Sci. 2005;46(13):843.
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© ARVO (1962-2015); The Authors (2016-present)
Purpose: To analyze changes in high order aberrations that occur after wavefront–optimized laser in situ keratomileusis (LASIK). Methods: Retrospective analysis of eyes that underwent LASIK with the Wavelight Allegretto Wave excimer laser. Wavefront aberrations were measured preoperatively and at 3 months postoperatively with the Nidek OPD–Scan ARK–10000 corneal analyzer. High order aberrations measured (in microns) included total high order, total Coma, total trefoil, total quadrafoil, total spherical aberration, and total high astigmatism. Results: Forty–six eyes from 24 patients were included in analysis. Average patient age was 42 years (range 23–62 years). Average preoperative spherical equivalent refraction (SE) was –3.80 D (4.38 to –9.75 D). Average postoperative SE was –0.09 D (2.13 to –1.38 D). There were no significant differences in high order aberrations for total high order (0.195 vs. 0.194 microns, p = 0.99), coma (0.076 vs. 0.081 microns, p = 0.68), trefoil (0.132 vs. 0.148 microns, p = 0.54), quadrafoil (0.064 vs. 0.044 microns, p = 0.50), or spherical aberration (0.030 vs. 0.035, p = 0.55). High order astigmatism was reduced postoperatively (0.041 vs. 0.019 microns, p = 0.02). Conclusions: LASIK with the Wavelight Alegretto Wave excimer laser did not significantly increase any high order aberrations, and reduced high order astigmatism.
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