Table 1.
Definition and characteristics of proposed typical PCV and POLYPOIDAL CNV.
| POLYPOIDAL CNV | Typical PCV | |
|---|---|---|
| Yuzawa et al. [13] | Polypoidal lesions developing at termini of CNV under the RPE | Inner choroidal vessel abnormality |
| Yuzawa et al. [14] | N = 20 (51%) | N = 19 (49%) |
| Choroidal thickness = 212 ± 84 µm | Choroidal thickness = 348 ± 91 µm | |
| Both feeder and draining vessels are visible, and network vessels show characteristic findings of CNV in ICGA. |
Neither feeder nor draining vessels are visible, and there are few network vessels in ICGA. | |
| GLD in ICGA = 4759 ± 1655 µm | GLD in ICGA = 1798 ± 738 µm | |
| PCV in the narrow sense | ||
| Tanaka et al. [15] | N = 85 (30%) | N = 202 (70%) |
| Significant associations with CFH I62V and ARMS2 A69S | Significant association with CFH I62V but not with ARMS2 A69S | |
| Kawamura et al. [16] | N = 13 (42%) | N = 18 (58%) |
| Choroidal thickness = 199 ± 65 µm | Choroidal thickness = 288 ± 98 µm | |
| Type 1 PCV | Type 2 PCV |
PCV: polypoidal choroidal vasculopathy, CNV: choroidal neovascularization, RPE: retinal pigment epithelium, ICGA: indocyanine green angiography, GLD: greatest linear dimension. Since the “polypoidal CNV” had been proposed for CNV in PCV or PCV itself and the usage of “POLYPOIDAL CNV” by Yuzawa et al. [13,14] differs from the originally used term “polypoidal CNV”, “POLYPOIDAL CNV” by Yuzawa et al. [13,14] is written in uppercase.