Choroidal filling pattern and topographical relationship with idiopathic choroidal neovascularisation (CNV) according to location
| Classification | Subfoveal CNV (N=16) | Juxtafoveal CNV (N=12) | Extrafoveal CNV (N=16) | p Value* |
|---|---|---|---|---|
| Hayashi's classification | ||||
| Type II-A | 2 (12.5%) | 2 (16.7%) | 3 (18.8%) | 0.510 |
| Type II-B | 2 (12.5%) | 2 (16.7%) | 1 (6.3%) | |
| Type III | 1 (6.3%) | 4 (33.3%) | 4 (25.0%) | |
| Type IV | 11 (68.8%) | 4 (33.3%) | 8 (50.0%) | |
| Mendrinos’ classification | ||||
| Stellate | 11 (68.8%) | 4 (33.3%) | 8 (50.0%) | 0.400 |
| Vertical | 5 (31.3%) | 7 (58.3%) | 7 (43.8%) | |
| Without extending to the fovea | 2 (40.0%) | 2 (28.6%) | 3 (42.9%) | |
| Extending to the fovea | 3 (60.0%) | 4 (57.1%) | 4 (57.1%) | |
| Through the fovea | 0 (0.0%) | 1 (14.3%) | 0 (0.0%) | |
| Angled | 0 (0.0%) | 1 (8.3%) | 1 (6.3%) | |
| Relationship between CNV and CWZ‡ | ||||
| Within | 14 (75.0%) | 9 (75.0%) | 16 (100%) | 0.342 |
| At the margin | 1 (6.3%) | 2 (16.7%) | 0 (0.0%) | |
| No relationship | 1 (6.3%) | 1 (8.3%) | 0 (0.0%) | |
*χ2 test.
CNV, choroidal neovascularisation; CWZ, choroidal watershed zone.