BCVA

There was also no difference in the BCVA between the two groups.

并且两组的最佳视觉敏感度没有差异。

Pre-and postoperative refraction and best corrected visual acuity ( BCVA) were registered.

记录术前、术后的屈光度和最佳矫正视力（BCVA）。

The best corrected visual acuity ( BCVA) and macular structural changes were observed before the surgery, and at1,2,3,4,8 months after the surgery.

手术后1、2、3、4、8个月复查，对比观察手术前后最佳矫正中心视力和黄斑部的结构变化。

At 24 months, there were 3 eyes ( 3.8%) had lost 2 or more lines of BCVA because of secondary keratoconus.

再次术后24月最佳矫正视力与再次术前相比下降2行以上的3眼占3.8%。

Results Preoperative BCVA was finger counting to 0.05 in all 15 eyes.

结果术前15眼视力均≤0·05。

The Best Correct Visual Acuity ( BCVA) was 1 02 ± 0 16 in group one, and 0 96 ± 0 17 in group two.

第一组最佳矫正视力为1.02±0.16，第二组为0.96±0.17。

Blind: The best corrected visual acuity ( BCVA) of good eye was less than 0.05;

视障情况：全盲为好眼的最佳矫正视力低于0.05；低视力指好眼的最佳矫正视力低于0.3。

Main Outcome Measures LogMAR visual acuity, BCVA, contrast sensitivity and stereoscopic vision.

主要指标LogMAR视力 、 最佳矫正视力 、 对比敏感度、立体视锐度.