Laser In Situ Keratomileusis Retreatment with Wavefront-Optimized Technique after Primary Wavefront-Guided LASIK: Proof of Concept

Abstract

ABSTRACT Purpose: To assess the visual outcome and refractive error following wavefront (WF)- optimized laser in situ keratomileusis (LASIK) retreatment after previous WF-guided LASIK in myopic patients. Methods: A retrospective analysis of 19 eyes (14 patients) following WF-optimized LASIK retreatment after previous WF-guided LASIK that did not give desired refractive results was conducted. The primary LASIK procedures were performed using the Visx CustomVue™ laser with WF-guided technology. All of the subsequent retreatment LASIK procedures were performed with the Wavelight Allegretto™ Eye-Q 400 excimer laser using WF-optimized. Ophthalmic evaluations including uncorrected visual acuity (UCVA), best spectacle corrected visual acuity (BSCVA), and manifest refraction spherical equivalent (MRSE) were performed at baseline and postoperatively at 1, 3, 6 months. Results: UCVA and BSCVA improved following retreatment from 0.27±0.18 and 0.0±0.05 to 0.01±0.05 and -0.03±0.05 respectively at 6 months (p<0.001 and p=0.38). The MRSE decreased from -0.5 D pre-retreatment to -0.2 D at 6 months postretreatment. The pre-retreatment total HOA was 0.48±0.21 (0.24 to 1.01μm) and did not show correlation with the visual outcomes postoperatively. No intra-operative or postoperative complications occurred. Conclusions: The results of this small case series with patients presenting low degrees of residual ametropia indicate that WF-optimized LASIK retreatment could be considered as an option after primary WFguided LASIK. Retreatment with WF-optimized LASIK is safe and the results are predictable.

Keywords

• Laser in situ keratomileusis (LASIK)
• retreatment
• residual refractive error
• wavefront-optimized
• wavefront-guided.