213 nm 솔리드 레이저를 이용한 라식의 단기임상결과

Clinical Outcomes of LASIK Using a 213 nm Solid-State Laser System: 6-month Follow-up

Purpose: To present prospective clinical results of laser-assisted in situ keratomileusis (LASIK) using a solid-state laser system for the correction of mild to moderate myopia with or without astigmatism. Methods: Thirty-eight eyes underwent LASIK using a 213 nm solid-state laser (Pulzar Z1<sup>TM, CustomVis<sup>TM, Australia). Uncorrected visual acuity (UCVA), best corrected visual acuity (BCVA), refractive errors, higher order aberrations (HOA) and contrast sensitivity were evaluated preoperatively and postoperatively. Results: The preoperative and postoperative mean spherical and cylindrical refractive errors were -3.27±0.85D, +1.04±0.69D, -0.36±0.7D and +0.14±0.2D, respectively. UCVA over 20/25 was obtained in 27 eyes (93%). A result within 1.00D of the desired correction was achieved in 90% of the eyes. There were no decreases in BCVA within the study group. The preoperative and postoperative root-mean-square of HOA at 3 months were 0.196±0.092 μm and 0.326±0.107 μm respectively. The preoperative and postoperative contrast sensitivity values were similar. Conclusions: The clinical outcomes of LASIK using a solid-state laser system were comparable to the conventional refractive surgery in mild to moderate myopia. The 213 nm solid state laser may be an alternative option for refractive surgery.