Table 3.
A Comparison of the Bleb Morphology Assessed by Swept-Source (SS) Anterior Segment-Optical Coherence Tomography (as-OCT) and the Indiana Bleb Appearance Grading Scale (IBAGS) (18) Between Eyes Who Underwent Primary Needling (Needling) and Those Who Did Not (No-Needling)
| AS-OCT | Overall (n=62) | Needling (n=19) | No-Needling (n=43) | p |
|---|---|---|---|---|
| Bleb Morphology, n (%) | ||||
| Encapsulated | 2 (3.2) | 0 (0.0) | 2 (4.7) | 0.5665a |
| Flat | 9 (14.5) | 2 (10.5) | 7 (16.3) | |
| Subconjunctival separation | 8 (12.9) | 3 (15.8) | 5 (11.6) | |
| Uniform | 11 (17.7) | 3 (15.8) | 8 (18.6) | |
| Multiple internal layer | 19 (30.6) | 8 (42.1) | 11 (25.6) | |
| Cyst | 13 (21.0) | 3 (15.8) | 10 (23.3) | |
| Subepithelial fibrosis, n (%) | ||||
| Yes | 4 (6.5) | 0 (0.0) | 4 (9.3) | 0.3029b |
| No | 58 (93.5) | 19 (100.0) | 39 (90.7) | |
| Cyst, n (%) | ||||
| No | 31 (50.0) | 12 (63.2) | 19 (44.2) | 0.2993a |
| Subepithelial | 23 (37.1) | 6 (31.6) | 17 (39.5) | |
| Epithelial/subepithelial | 8 (12.9) | 1 (5.3) | 7 (16.3) | |
| IBAGS | ||||
| Heigh, n (%) | ||||
| H0 | 26 (41.9) | 8 (42.1) | 18 (41.9) | 0.7050a |
| H1 | 22 (35.5) | 8 (42.1) | 14 (32.6) | |
| H2 | 12 (19.4) | 3 (15.8) | 9 (20.9) | |
| H3 | 2 (3.2) | 0 (0.0) | 2 (4.7) | |
| Bleb extend, n (%) | ||||
| E0 | 16 (25.8) | 3 (15.8) | 13 (30.2) | 0.1325a |
| E1 | 21 (33.9) | 5 (26.3) | 16 (37.2) | |
| E2 | 23 (37.1) | 11 (57.9) | 12 (27.9) | |
| E3 | 2 (3.2) | 0 (0.0) | 2 (4.7) | |
| Bleb vascularity, n (%) | ||||
| V0 | 5 (8.1) | 0 (0.0) | 5 (11.6) | 0.3769a |
| V1 | 1 (1.6) | 0 (0.0) | 1 (2.3) | |
| V2 | 52 (83.9) | 18 (94.7) | 34 (79.1) | |
| V3 | 4 (6.5) | 1 (5.3) | 3 (7.0) | |
| Seidel test, n (%) | ||||
| S0 | 60 (96.8) | 17 (89.5) | 43 (100.0) | 0.0319a |
| S1 | 0 (0.0) | 0 (0.0) | 0 (0.0) | |
| S2 | 2 (3.2) | 2 (10.5) | 0 (0.0) |
Notes: aChi-squared test for trend. bFisher exact test.