Alcon CustomCornea Wavefront-guided Retreatments After Laser in situ Keratomileusis

<p>ABSTRACT</p><p>PURPOSE: To evaluate the outcome of wavefront-guided ablations for the correction of residual myopia and astigmatism after standard laser in situ keratomileusis (LASIK).</p><p>METHODS: Twenty nine eyes of 26 patients who underwent wavefront-guided LASIK retreatment with Alcon CustomCornea (Alcon Laboratories Ine, Fort Worth, Tex) were evaluated. Complete ophthalmologic examination, corneal topography, and wavefront measurements were performed. Uncorrected visual acuity (UCVA), best spectaclecorrected visual acuity (BSCVA), manifest refraction, and wavefront analysis were evaluated preoperatively, 1 week, 3 months, and 6 months after surgery. Wavefront measurements were assessed using the LADARWave device. Statistical analysis was performed using the McNemar test and percentages of success.</p><p>RESULTS: One week postoperatively, UCVA was ≥20/40 in 100% of eyes (5*20/20 in 31%) and BSCVA was ^=20/40 in 100% (2*20/20 in 73%). Wavefront analysis showed a decrease in total aberrations, high order aberrations, defocus, coma, spherical aberration, and other terms of higher order aberrations at 1-week follow-up. Three months postoperatively, UCVA was 5*20/40 in 100% of eyes (^20/20 in 38%) and BSCVA was 5*20/40 in 100% (2*20/20 in 81%). Six months postoperatively, UCVA was &gt;20/40 in 100% of eyes (5*20/20 in 60%) and BSCVA was 5*20/40 in 100% (^20/20 in 90%). Wavefront analysis showed decrease in total aberration, high order aberration, defocus, coma, and spherical aberration.</p><p>CONCLUSION: Wavefront-guided LASIK retreatment in post-LASIK eyes represents a good option for laser vision correction. All eyes showed reduction in pre-existing total aberrations. Some high order aberration components decreased in this initial series. Further follow-up is necessary to assess the initial predictability of wavefront-guided LASIK upgrade. [J Refract Surg 2004;20:S654-S660]</p>