Title: Clinical outcomes of z-axis adjusted laser in situ keratomileusis for myopia with unsymmetrical corneal topography
Abstract: Objective To evaluate the efficacy and safety of z-axis adjusted LaserSight AstraPro2.2 Z custom ablation software in myopic laser in situ keratomileusis (LASIK). Design Retrospective case series. Participants 157 myopic patients (294 eyes) with unsymmetrical or irregular corneal topography following primary LASIK. Methods LASIK was performed with AstraPro Planner 2.2 Z software of LaserSight SLX laser(5.3,300Hz). Low-to-moderate myopia group was preoperative spherical equivalent[SE] lower -6.00D,and high group was SE -6.00 D or higher. The average follow-up was 6.35±5.89 months. Main Outcome Measures The decimal visual acuity,refraction,and corneal asphericity (Q-value). Results In low-to-moderate and high myopia group,postoperative mean uncorrected visual acuities were 1.15±0.15(0.8-1.5)and 1.08±0.16 (0.4-1.5),respectively. Refractions were 0.26±0.53 Ds/-0.36±0.32 Dc and -0.29±0.77 Ds/-0.50±0.34 Dc,respectively. Q-values were 0.17±0.32 and 0.65±0.45,respectively. No vision threatening complications were observed during operation and in postoperation. Conclusion Z-axis adjusted LASIK was safe,effective,and stably refractive for myopic eye with unsymmetrical or irregular corneal topography. Clinical outcomes in low-to-moderate myopia group was better than that in high myopia group.
Publication Year: 2010
Publication Date: 2010-01-01
Language: en
Type: article
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