Comparison of ExPress Implantation and Partial Deep Sclerectomy Combined with ExPress Implantation and Simultaneous Phacoemulsification
Table 6
Visual acuity (Snellen charts): mean values, median values, standard deviations, and range in the ExPress and DS-ExPress groups at specific times after surgery.
Time
ExPress
DS-ExPress
Mean ± SD
Median
Range
Mean ± SD
Median
Range
Pre-op
0.45 ± 0.3
0.5
0–2.8
0.49 ± 0.3
0.5
0–3
0.436
1st day
0.29 ± 0.2
0.2
0–2
0.43 ± 0.2
0.4
0.05–2
0.005
7th day
0.45 ± 0.2
0.5
0–2
0.59 ± 0.2
0.6
0–2
0.013
1st month
0.63 ± 0.3
0.6
0–1.7
0.73 ± 0.2
0.8
0–2
0.089
3rd month
0.78 ± 0.2
0.9
0–1.4
0.78 ± 0.2
0.8
0–1.7
0.665
6th month
0.86 ± 0.2
0.9
0–1.7
0.83 ± 0.2
0.9
0–1.7
0.433
9th month
0.82 ± 0.2
0.9
0–1.7
0.81 ± 0.2
0.9
0–1.7
0.74
12th month
0.81 ± 0.2
1.0
0–1.7
0.81 ± 0.3
0.9
0–1.4
0.752
18th month
0.76 ± 0.3
0.8
0–0.4
0.8 ± 0.2
0.8
0–0.4
0.872
24th month
0.77 ± 0.3
0.8
0–0.4
0.8 ± 0.2
0.9
0–0.4
0.734
ExPress: Ex-Press device implantation group; DS-ExPress: Mermoud’s ExPress modification group; SD: standard deviation; Pre-op: before operation. Mann–Whitney’s U test.
