Table 3.
OCTA Results for ONH Vessel Density in the NH Layer
| Segmentation NH | POAG | NTG | XFG | p-Valuea | Differences Between the Three Groupsb |
|---|---|---|---|---|---|
| SSI | 57.0 (41.0;72.0) | 56.0 (40.0;71.0) | 50.0 (42.0;74.0) | 0.09 | |
| wpVD (%) | 49.9 (28.8;58.9) | 50.7 (26.3;57.3) | 46.9 (34.3;54.7) | 0.09 | |
| iVD (%) | 47.3 (30.8;57.5) | 45.7 (31.7;54.5) | 41.9 (32.7;52.2) | 0.21 | |
| ppVD avg(%) | 54.9 (33.3;63.3) | 56.8 (31.1;64.9) | 52.3 (36.8;59.8) | 0.07 | |
| ppVD nas (%) | 51.2 (32.9;63.4) | 54.3 (23.3;62.8) | 49.1 (29.1;59.4) | 0.08 | |
| ppVD infnas (%) | 54.9 (28.6;68.0) | 60.9 (29.0;69.2) | 52.4 (30.4;63.9) | 0.04 | NDG vs PEX |
| ppVD inftemp (%) | 58.6 (33.2;70.2) | 56.7 (28.4;71.8) | 52.5 (36.7;66.7) | 0.16 | |
| ppVD suptemp (%) | 57.3 (28.4;71.5) | 53.7 (36.5;74.2) | 51.3 (28.6;65.9) | 0.13 | |
| ppVD supnas (%) | 53.0 (31.1;63.4) | 56.4 (22.8;68.3) | 51.3 (16.5;67.6) | 0.21 | |
| ppVD temp (%) | 55.9 (26.6;64.4) | 51.7 (36.6;64.2) | 53.6 (35.3;59.5) | 0.45 |
Abbreviations: POAG, primary open-angle glaucoma; XFG, exfoliation glaucoma; NTG, normal-tension glaucoma; SSI, signal strength index; RPC, radial peripapillary capillary layer; wpVD, whole papillary vessel density; iVD, inside disc vessel density; ppVD, peripapillary vessel density.
All Values Expressed as Median and Range (Min; Max). aKruskall–Wallis test; bpost-hoc analysis between the groups (Conover).