Short-term outcomes of femtosecond laser-assisted laser in situ keratomileusis for high astigmatism in myopes

• DOI: 10.3760/cma.j.issn.1674-845x.2014.04.007
• Publication Date: 2014-04-25
• Authors: Shengjian Mi; Jinke Li; Yuhui Duan; Meng Chen; Jia Li
• Keywords: LASIK; Astigmatism

Objective To evaluate the short-term outcomes after femtosecond laser-assisted laser in situ keratomileusis (FEMTO-LASIK) highly astigmatic myopes.Methods Eyes with more than 2.0 diopters (D) of astigmatism were identified from patient records.The mean preoperative cylinder was-2.45±0.62 DC myopic eyes.Patients examined preoperatively and 3 months postoperatively.Laser was performed a WaveLight FS200 eye-Qexcimer laser.Preoperative postoperative refractions converted to vector values.Induced torsion axis correction achieved for sphere determined.Data analyzed using paired t test linear regression.Results After months,the +0.37±0.50 D eyes was-0.57±0.44 D.Spherical equivalent (SE) +0.18±0.48 target value.Astigmatism undercorrected by-0.30±0.43 (t=6.17,P＜0.01),and induced 0.09±0.34 radians (t=2.22,P＜0.05).Attempted SE corrections correlated (R2=0.96).Conclusion Laser can precisely correct refraction but leads undercorrection.A slight counterclockwise induced.

Key words: Femtosecond ; Keratomileusis,laser Myopic Astigmatism