Classification of a choroidal watershed zone in patients with idiopathic choroidal neovascularisation (CNV) and normal controls
| Idiopathic CNV | Control | p Value* | |
|---|---|---|---|
| Hayashi's classification | |||
| Type II-A | 7 (15.9%) | 7 (23.3%) | 0.261 |
| Type II-B | 5 (11.4%) | 0 (0%) | |
| Type III | 9 (20.5%) | 7 (23.3%) | |
| Type IV | 23 (52.3%) | 16 (53.3%) | |
| Mendrinos’ classification | |||
| Stellate | 23 (52.3%) | 15 (50.0%) | 0.150 |
| Vertical | 19 (43.2%) | 15 (50.0%) | |
| Extending to the fovea | 11 (57.9%) | 3 (10.0%) | |
| Without extending to the fovea | 7 (36.8%) | 11 (36.7%) | |
| Through the fovea | 1 (5.3%) | 1 (3.3%) | |
| Angled | 2 (4.5%) | 0 (0%) | |
| Foveal involvement | |||
| Foveal | 37 (84.1%) | 11 (36.7%) | <0.0001 |
| Non-foveal | 7 (15.9%) | 19 (63.3%) | |
*χ2 test.
CNV, choroidal neovascularisation.