Table 2 Vascular density in superficial capillary network (SCN) of normal subjects and subtypes of diabetic retinopathy (N = 188)
|
Groups VD/ Reference group |
NL (40 eyes) Median (range) (%) |
NDR (39eyes) Median (range) (%) |
NPDR (64eyes) Median (range) (%) |
PDR (45eyes) Median (range) (%) |
P-value Kruskal –Wallis test |
|---|---|---|---|---|---|
|
Whole image Normal NDR NPDR |
54.65 (47.00–50.04) |
51.90 (42.40–56.28) < 0.001* |
48.05 (35.07–55.78) < 0.001* < 0.001* |
45.50 (33.74–50.48) < 0.001* < 0.001* < 0.001* | < 0.001 |
|
Fovea Normal NDR NPDR |
29.17 (23.94–41.86) |
26.26 (20.77–34.20) 0.013* |
27.07 (16.11–38.10) 0.033* 0.859* |
24.00 (17.68–36.14) < 0.001* 0.045* 0.062* | 0.001 |
|
Para-fovea Normal NDR NPDR |
57.37 (50.09–62.24) |
54.54 (42.74–59.47) < 0.001* |
49.96 (36.69–57.81) < 0.001* < 0.001* |
47.24 (35.77–52.32) < 0.001* < 0.001* < 0.001* | < 0.001 |
|
Superior-hemi Normal NDR NPDR |
57.25 (48.60–62.67) |
54.03 (44.06–59.20) < 0.001* |
49.92 (34.64–57.05) < 0.001* < 0.001* |
46.67 (33.59–53.64) < 0.001* < 0.001* < 0.001* | < 0.001 |
|
Inferior-hemi Normal NDR NPDR |
57.39 (49.50–62.60) |
54.13 (41.44–59.73) < 0.001* |
49.70 (38.70–58.55) < 0.001* < 0.001* |
46.82 (38.06–53.41) < 0.001* < 0.001* < 0.001* | < 0.001 |
|
Temporal Normal NDR NPDR |
55.76 (48.17–60.28) |
53.57 (39.58–58.12) 0.001* |
48.62 (36.52–57.70) < 0.001* < 0.001* |
46.17 (37.79–52.46) < 0.001* < 0.001* < 0.001* | < 0.001 |
|
Superior Normal NDR NPDR |
58.50 (49.62–63.98) |
55.57 (45.22–59.62) < 0.001* |
50.58 (36.96–57.50) < 0.001* < 0.001* |
46.25 (34.26–53.65) < 0.001* < 0.001* 0.001* | < 0.001 |
|
Nasal Normal NDR NPDR |
57.13 (49.50–62.64) |
53.44 (44.22–58.51) < 0.001* |
49.31 (33.37–57.84) < 0.001* 0.001* |
46.34 (31.09–52.93) < 0.001* < 0.001* 0.002* | < 0.001 |
|
Inferior Normal NDR NPDR |
57.87 (48.20–63.75) |
55.06 (42.01–61.70) < 0.001* |
50.35 (39.90–59.36) < 0.001* < 0.001* |
47.34 (38.26–54.97) < 0.001* < 0.001* < 0.001* | 0.043 |
