英语语法分析

Objective: to evaluate the efficacy and safety of orthokeratology of correction of myopia lower than - 6.0d.

目的：评价角膜矫形学治疗- 6.0 D以下近视的有效性及安全性。

Conclusion: Orthokeratology is a safe, effective and stable procedure for correcting myopia lower than - 6.0d.

结论：角膜矫形学治疗- 6.0 D以下近视安全有效，而且稳定性好。

Conclusion: This study showed that orthokeratology is effective on reducing the refraction of myopia after overnight wear.

结论：过夜配戴角膜塑型镜后减低近视屈光度的效果明显。