The CLASS Surgical Site Characteristics in a Clinical Grading Scale and Anterior Segment Optical Coherence Tomography: A One-Year Follow-Up
Table 1
Comparison of bleb morphology in the successful and failed groups using the Indiana Bleb Appearance Grading Scale (IBAGS) at 1 month (1M), 3 months (3M), and 12 months (12M).
1M
3M
12M
Successful ()
Failed ()
Successful ()
Failed ()
Successful ()
Failed ()
n
%
n
%
n
%
n
%
n
%
n
%
H0
0
0
10
59
<0.001
10
43
15
88
0.01
11
48
10
100
0.005
H1
21
91
7
41
0.002
13
57
2
12
0.01
12
52
0
0
0.005
H2
2
9
0
0
0.499
0
0
0
0
—
0
0
—
0
—
E0
2
9
10
59
0.002
10
43
15
88
0.01
11
48
10
100
0.005
E1
1
4
7
41
0.006
2
9
2
12
1
2
9
0
0
1
E2
19
83
0
0
<0.001
11
48
0
0
0.001
10
43
0
0
0.015
V1
0
0
0
0
—
4
17
0
0
0.123
4
17
0
0
0.289
V2
23
100
12
71
0.009
19
83
12
71
0.456
19
83
10
100
0.289
V3
0
0
5
29
0.009
0
0
5
29
0.009
0
0
0
0
—
S0
23
100
16
94
0.425
23
100
17
100
—
23
100
10
100
—
S1
0
0
1
6
0.425
0
0
0
0
—
0
0
0
0
—
Chi-squared test; Fisher’s exact test (due to low expected values).
