Preoperative BCVA,

average (decimal) ± SD

Postoperative BCVA,

average (decimal) ± SD

P value

Group 1

0.14 ± 0.11

0.74 ± 0.20

<0.001a

Group 2

0.12 ± 0.13

0.54 ± 0.20

Group 3

0.13 ± 0.13

0.39 ± 0.18