XEN Glaucoma Implant for the Management of Operated Uncontrolled Glaucoma: Results and Complications during a Long-Term Follow-Up
Table 2
Visual acuity (decimal notification) and interocular pressure mean values, median values, standard deviations, and range before and after surgery.
n
Mean (SD)
Median
Range
MD (95% CI)
Visual acuity with the combined procedure (BCVA)
Preop
10
0.2 (0.1)
0.15
0.01 to 0.7
0.08 (0.02; 0.11)
0.001
Final
10
0.6 (0.22)
0.55
0.3 to 1.00
Change
10
0.4 (0.44)
0.2
0.1 to 0.8
Visual acuity with the solo procedure (BCVA)
Preop
59
0.35 (0.31)
0.30
0.001 to 1.00
0.09 (0.04; 0.13)
<0.001
Final
49
0.41 (0.35)
0.40
0.00 to 1.00
Change
49
0.08 (0.16)
0.01
−0.30 to 0.60
Intraocular pressure (IOP)
Preop
68
24.82 (8.03)
22.00
17.00 to 45.00
−7.48 (−10.04; −4.93)
<0.001
Final
64
17.45 (5.84)
17.00
7.00 to 38.00
Change
64
−7.48 (10.24)
−5.00
−36.00 to 21.00
Change (%)
64
−23.3% (32.5%)
−24.2%
−81.6% to 123.5%
SD: standard deviation; preop: preoperatively; MD: mean difference calculated as final value–preop value with 95% confidence interval; paired t-test; combined procedure: XEN implantation with phacoemulsification; solo procedure: XEN implantation.
