Table 2.
Qualitative OCT changes
| OCT criteria | Available before switch | Available after switch | Difference | |
|---|---|---|---|---|
| Primary switch | ||||
|
Total group - N = 61 |
Foveal depression | 51 (83.6%) | 48 (78.7%) | -4.92% |
| Macular edema | 34 (55.7%) | 49 (80.3%) | + 24.6% | |
| Intraretinal edema | 19 (31.2%) | 33 (54.1%) | + 22.9% | |
| Subretinal edema | 18 (29.5%) | 29 (47.5%) | + 18.0% | |
| RPEa detachment | 14 (23.0%) | 15 (24.6%) | + 1.6% | |
| Secondary switch | ||||
|
Back switch subgroup - First switch - N = 28 |
Foveal depression | 23 (82.1%) | 22 (78.6%) | -3.5% |
| Macular edema | 19 (67.9%) | 25 (89.3%) | + 21.4% | |
| Intraretinal edema | 8 (28.6%) | 16 (57.1%) | + 28.5% | |
| Subretinal edema | 12(42.9%) | 15 (53.6%) | + 10.7% | |
| RPEadetachment | 5 (17.9%) | 6 (21.4%) | + 3.5% | |
|
Back switch subgroup - Second switch - N = 26 |
Foveal depression | 21 (80.8%) | 23 (88.5%) | + 7.7% |
| Macular edema | 25 (96.2%) | 18 (69.2%) | -27.0% | |
| Intraretinal edema | 16 (61.5%) | 11 (42.3%) | -19.2% | |
| Subretinal edema | 20 (76.9%) | 8 (30.8%) | -46.1% | |
| RPEa detachment | 8 (30.8%) | 4 (15.4%) | -15.4% | |
|
Inverse subgroup - First switch - N = 33 |
Foveal depression | 28 (84.9%) | 26 (78.8%) | + 6.1% |
| Macular edema | 15 (45.5%) | 24 (72.7%) | + 27.2% | |
| Intraretinal edema | 11 (33.3%) | 17 (51.2%) | + 17.9% | |
| Subretinal edema | 6 (18.2%) | 14 (42.4%) | + 24.2% | |
| RPEa detachment | 9 (27.3%) | 9 (27.3%) | ± 0.0% | |
aRPE, retinal pigment epithelial