Comparison of Q-value guided customized and standardized LASIK for myopia.

Objective To compare the clinical effect of Q- value guided customized LASIK (Q-LASIK) and standardized LASIK(S-LASIK) for myopia. Methods Fifty-one eyes of 28 pa- tients were treated with Q-LASIK, and fifty-one eyes of 26 patients were treated with S-LASIK. Preoperative and postoperative 1 month, visual acuity, refractions, Q-value and spherical aberration were evaluated in all cases. Results The postoperative visual acu- ity and refractions were not significantly different between the two groups(P0.05).Corneal Q value and spherical aberration had both increased after surgery. In Q-LASIK group, they were obvi- ously lower than that in S-LASIK group, which had statistical sig- nificance(P0.05);the incidence of vision quality's decrement in Q-LASIK group was lower than that in S-LAS1K group. Conclu- sions Q-LASIK may maintain the asphericity of corneal surface, also help reduce the induction of spherical aberration in refractive surgical correction of myopia and myopic astigmatism, therefore, Q- LASIK is efficient in improving patients' visual quality.