Laser Vision Correction for Treatment of Residual Refractive Error After Refractive Lens Exchange
Purpose
To describe the efficacy of LASIK and PRK for residual refractive error after refractive lens exchange (RLE).
Methods
Retrospective review of all patients undergoing either LASIK or PRK for residual refractive error after refractive lens exchange between 1/2008 and 6/2014 at Optical Express centers (Glasgow, UK). Preoperative and postoperative manifest refractions, as well as uncorrected and best corrected visual acuity were analyzed.
Results
This study included 661 patients (893 eyes) who underwent LASIK and 602 patients (724 eyes) who underwent PRK after RLE. The mean manifest spherical equivalent prior to LVC was -0.22 ± 1.03 D, this improved to -0.14 ± 0.52 D after LASIK and -0.14 ± 0.57 D after PRK (p<0.001 from preoperative to postop for both LASIK and PRK). Patients that had a myopic correction after RLE were more likely to have 20/20 UCDA than those that had a hyperopic correction (70.8% vs 60.4%, p<0.0001). Treatments that were wavefront-guided and LASIK treatments were more likely to yield 20/20 UCDA.
Conclusion
Laser vision correction after RLE is an effective and reliable method of reducing residual refractive error. Myopic corrections and wavefront-guided LASIK may yield the highest proportion of patients with 20/20 uncorrected vision at distance.