Table 4 The OCTA features of irradiated eyes without radiation retinopathy in comparison with the non-irradiated fellow eyes in the patients with choroidal melanoma

237 ± 64

231 ± 61

−5.50 (− 34.19–23.19)

0.707

FAZ μm²

Superficial

612 ± 626

537 ± 447

− 75.20 (− 215–64.81)

0.292

Deep

339 ± 320

346 ± 333

7.22 (−28.17–42.61)

0.689

Superficial vascular density %

Fovea

26.14 ± 6.15

28.70 ± 4.26

2.55 (− 2.09–7.20)

0.282

Parafovea

27.70 ± 6.54

31.04 ± 4.71

2.60 (− 1.77–8.45)

0.200

Deep vascular density %

Fovea

25.99 ± 7.80

34.28 ± 3.22

8.28 (1.65–14.91)

0.014

Parafovea

27.19 ± 8.50

36.19 ± 2.90

9.00 (1.68–16.32)

0.016

Superficial skeleton density %

Fovea

9.95 ± 2.29

11.31 ± 1.71

1.35 (− 0.21–2.93)

0.091

Parafovea

10.49 ± 2.50

12.18 ± 1.88

1.68 (− 0.09–3.47)

0.064

Deep skeleton density %

Fovea

11.42 ± 3.24

15.10 ± 1.41

3.68 (0.89–6.46)

0.010

Parafovea

11.77 ± 3.48

15.76 ± 1.39

3.98 (0.93–7.02)

0.010