A Comparison of Conventional Lasik and Wavefront-Guided Lasik for the Correction of Residual Refractive Errors after Multifocal Lens Implantation

Purpose: To review the outcomes of wavefront-guided and conventional LASIK enhancement for correcting residual refractive errors of patients who underwent multifocal intraocular lens (IOL) implantation. Method: A nonrandomized, retrospective analysis. Results: LASIK operation was performed on 43 of 352 (12.2%) eyes (30 patients) with residual refractive errors (myopia) after multifocal IOLs implantation. Among these 30 patients, 13 patients (26 eyes) underwent bilateral and 17 patients (17 eyes) underwent unilateral LASIK operations. Uncorrected visual acuity (UCVA) and near visual acuity (NVA) improved significantly in all patients who underwent LASIK. No eye had a loss of best spectacle-corrected visual acuity (BSCVA) after LASIK. In the conventional LASIK group (28 eyes), UCVA improved and residual refractive errors after IOL implantation were corrected. The halo was reduced in 22 eyes (22/28). In the wavefront-guided LASIK group (15 eyes), UCVA improved and the halo was reduced in all eyes. In the group with residual hyperopic refractive errors, LASIK operation was performed on 11 eyes (11/352) after multifocal IOL implantation. In these 11 eyes, conventional and wavefront-guided LASIK was performed in 7 and 4 eyes, respectively. After the first LASIK operation, hyperopia was corrected in 1 (1/7) and 3 (3/4) eyes in conventional LASIK and wavefront-guided LASIK groups, respectively. Therefore, the percentage of eyes requiring secondary LASIK operation for the correction of residual hyperopia in the conventional LASIK group (6/7, 85.7%) was considerably greater than that in the wavefront-guided LASIK group (1/4, 25%). Conclusion: Wavefront-guided LASIK is a safe and effective procedure for correcting residual refractive errors after implantation of multifocal IOL.