Table 2.
Peripapillary retinal nerve fiber layer thickness and parameters of optical coherence tomography angiography.
| Control group | DM group | P value | |
|---|---|---|---|
| pRNFL thickness (mean ± SD, μm) | |||
| Mean | 95.9 ± 8.6 | 93.7 ± 8.7 | 0.016 |
| Superior | 120.8 ± 20.2 | 116.8 ± 17.3 | 0.015 |
| Temporal | 72.4 ± 10.5 | 71.0 ± 12.9 | 0.291 |
| Inferior | 123.3 ± 15.1 | 120.1 ± 19.8 | 0.049 |
| Nasal | 68.4 ± 9.1 | 70.1 ± 13.8 | 0.179 |
| OCTA parameters | |||
| VD full area (mean ± SD, mm−1) | 18.2 ± 0.7 | 17.6 ± 1.1 | < 0.001 |
| VD outer ring (mean ± SD, mm−1) | 18.8 ± 0.7 | 18.2 ± 1.3 | < 0.001 |
| VD inner ring (mean ± SD, mm−1) | 17.6 ± 1.3 | 17.2 ± 1.6 | 0.015 |
| PD full area (mean ± SD, %) | 46.5 ± 3.1 | 44.6 ± 4.6 | < 0.001 |
| PD outer ring (mean ± SD, %) | 47.6 ± 1.7 | 46.1 ± 4.2 | < 0.001 |
| PD inner ring (mean ± SD, %) | 46.1 ± 3.5 | 45.2 ± 4.3 | 0.020 |
pRNFL peripapillary retinal nerve fiber layer, OCTA optical coherence tomography angiography, VD vessel density, PD perfusion density.
Significant values are in bold.