Results of Wavefront–guided surface ablation for myopia and astigmatism correction in primary eyes.

Abstract

Abstract: : Purpose: Evaluate the outcome of wavefront–guided surface ablation outcomes for the correction of myopia and astigmatism. Methods: Twenty one eyes (20patients) of individuals that underwent wavefront–guided surface ablation (PRKor LASEK) were evaluated. Complete ophthalmologic exam, corneal topography and wavefront measurements were performed. Uncorrected visual acuity(UCVA), best corrected visual acuity (BCVA), manifest refaction and wavefront analysis were evaluated preoperatively, 1week, 3 months, and 6 months after surgery. Wavefront measurements were assessed using the LADARWave device. Statistical analysis was performed using paired T–test to assess whether there was significant change after the surgery, and results were considered significant at a P valueof <0.05. Results: One month after surgery, UCVA was >20/40 in 81.81% of eyes( > 20/20 in 31.81%) and BCVA was > 20/40 in 100% ( > 20/20 in 77.27%). Wavefront analysis revealed total aberrations reduction in 100%of eyes. Three months postoperatively, UCVA was > 20/40 in 100% of eye( 20/20 in 41.66%) and BCVA was > 20/40 in 100% ( > 20/20 in 100%). Higher order aberrations, coma, spherical aberration and other terms were significantly induced at 1 month postop. At the 3 month follow–up there was no statistically significant induction of higher order aberrations; with coma, spherical aberration and other term values very similar to preop. Conclusions: Wavefront–guided surface ablation represents a good option for laser vision correction. All eyes showed reduciton in pre–existing total aberrations. Some high order aberration components decreased in this initial series.

Keywords: none