Table 2.
Superficial and deep capillary plexus (DCP) vascular density at baseline and following panretinal photocoagulation (PRP) at various Early Treatment Diabetic Retinopathy Study (ETDRS) circles.
| Baseline | After PRP | P valuea | ||
|---|---|---|---|---|
| FAZ | 0.40 ± 0.13 | 0.39 ± 0.13 | 0.75 | |
| SCP vascular density (%) | Fovea | 24.5 ± 4.7 | 26.0 ± 3.3 | 0.007 |
| Para-Fovea | 47.2 ± 3.8 | 47.6 ± 4.6 | 0.80 | |
| Temporal | 47.4 ± 3.5 | 46.1 ± 6.1 | 0.55 | |
| Nasal | 45.0 ± 6.8 | 47.5 ± 4.7 | 0.31 | |
| Superior | 48.4 ± 5.1 | 48.5 ± 4.5 | 0.95 | |
| Inferior | 46.9 ± 4.7 | 48.4 ± 4.8 | 0.35 | |
| DCP vascular density (%) | Fovea | 22.8 ± 7.2 | 26.1 ± 4.9 | 0.03 |
| Para-Fovea | 53.8 ± 2.1 | 53.5 ± 3.2 | 0.79 | |
| Temporal | 50.8 ± 5.6 | 54.3 ± 2.8 | 0.049 | |
| Nasal | 51.6 ± 5.4 | 53.5 ± 2.8 | 0.27 | |
| Superior | 56.0 ± 2.3 | 55.3 ± 3.7 | 0.62 | |
| Inferior | 54.5 ± 3.8 | 54.4 ± 4.1 | 0.85 | |
PRP: Panretinal photocoagulation; FAZ: Foveal avascular zone measure at superficial capillary plexus; SCP: Superficial capillary plexus; DCP: Deep capillary plexus.
a
By generalized estimating equation (GEE) model.