Table 2.
Major vessel measurements in OCTA between RE and controls.
| RE | Control | p | |
|---|---|---|---|
| SVP in the macular area: ILM–IPL | |||
| Whole image VD (%) | 48.55 ± 3.22 | 49.94 ± 2.63 | *0.018 |
| Superior VD (%) | 48.82 ± 3.32 | 50.23 ± 2.74 | *0.021 |
| Inferior VD (%) | 48.27 ± 3.35 | 49.67 ± 2.69 | *0.022 |
| FAZ (mm2) | 0.32 ± 0.10 | 0.29 ± 0.10 | 0.098 |
| Foveal VD (ring diameter = 1 mm) (%) | 17.46 ± 6.00 | 18.80 ± 6.87 | 0.296 |
| Parafoveal VD (ring diameter = 3 mm) (%) | 50.85 ± 3.96 | 52.23 ± 3.01 | *0.049 |
| Perifoveal VD (ring diameter = 6 mm) (%) | 48.87 ± 3.50 | 50.60 ± 2.73 | *0.006 |
| DVP in the macular area: IPL–OPL | |||
| Whole image VD (%) | 49.70 ± 5.98 | 50.82 ± 4.71 | 0.296 |
| RPCP in the ONH | |||
| Whole image VD (%) | 49.33 ± 3.21 | 50.03 ± 2.80 | 0.244 |
| Inside disc VD (%) | 50.60 ± 5.60 | 52.32 ± 4.72 | 0.090 |
| peripapillary VD (%) | 51.24 ± 3.90 | 52.18 ± 3.25 | 0.181 |
RE, radiation encephalopathy; SVP, superficial vascular plexus; ILM, internal limiting membrane; IPL, inner plexiform layer; VD, vessel density; FAZ, foveal avascular zone; DVP, deep vascular plexus; OPL, outer plexiform layer; RPCP, radial peripapillary capillary plexus; ONH, optic nerve head.
*
p < 0.05.