Title: Short-term outcome of aspheric ablation excimer laser corneal refractive surgery
Abstract: Objective Laser in situ keratomileusis is latest and ideal refractive operation.Recently,the operative complications affecting the visual quality are concerned.This study was to investigate the clinical effectiveness of aspheric ablation guided excimer laser corneal refractive surgery.Methods The short-sighted patients with the sphere less-6.00 D and cylinder less-2.00 D were randomly divided into Q-Factor adjusted group(64 eyes of 32 cases)and conventional LASIK group(64 eyes of 32 cases).Aspheric ablation guided excimer laser corneal refractive surgery was performed in the eyes of Q-Factor adjusted group,and conventional LASIK was performed as controls.Uncorrective visual acuity,residual diopter,increased volume of corneal wavefront(coma,SphAb and root mean square,RMS)after 1 month of operation were evaluated and compared between these two groups.Results No significant difference was found in uncorrective visual acuity and residual diopter in 1 month after operation between two groups(χ^2=0.36,P=0.583;χ^2=0.75,P=0.324).However,the increased value in corneal wavefront(coma,sphAb and RMS)in Q-Factor adjusted group was less than that of conventional LASIK group(t=2.135,P=0.026;t=2.453,P=0.012;t=2.064,P=0.031;t=2.361,P=0.014).Thirty-one patients were satisfied with the visual quality in Q-Factor adjusted group and 25 patients were satisfied in conventional LASIK group,showing a statistically significant difference between two group(χ^2=0.982,P=0.033).Conclusion Aspheric ablation guided excimer laser corneal refractive surgery improve the visual quality by decreasing corneal wavefront,especially sphAb.
Key words:
aspheric ablation; excimer laser corneal refractive surgery; custom ablation
Publication Year: 2008
Publication Date: 2008-08-15
Language: en
Type: article
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Cited By Count: 1
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