Effect of different laser energy settings on the formation of opaque bubble layer and visual performance in SMILE surgery: a single center clinical study

Purpose: To investigate the effect of different laser energy settings, including varying combinations and spot distance setting, on formation opaque bubble layers in first stage preoperative postoperative visual quality patients with myopia astigmatism. Methods: A total 72 were enrolled this study. They all had and/or astigmatism undergone small incision lenticule extraction (SMILE) both eyes between April 2021 February 2022 at Huizhou Municipal Central Hospital, Huizhou, China. randomly assigned to four groups 18 each. The parameters set groups, a pulse 120 or 130 nJ 3.0 μm 4.5 μm. indices assessed included layer after surgery, uncorrected acuity (UCVA), higher-order aberrations (HOAs), sensitivity under light levels 3 months postoperatively. Results: Total HOAs smaller, contrast various luminance specific spatial frequencies was better when compared μm, respectively (p < 0.05). Conclusion: Lower larger spacing settings produce outcomes for patients, also affect first-stage layer, which is useful clinical ophthalmologists during SMILE surgery. setting provides reliable basis achieve