Retinal capillary perfusion heterogeneity in diabetic retinopathy detected by optical coherence tomography angiography

Table 2 Summary of the mean vessel densities (VD) and perfusion densities (PD) in each diabetic retinopathy (DR) severity group, in both vascular complexes

	Metric (r)	Control	No DR	Mild DR	Moderate-Severe DR
SVC	Mean VD (− 0.6284)	0.1288	0.1221	0.1108	0.1028
	Mean PD (− 0.6709)	0.5748	0.5474	0.5043	0.5031
DVC	Mean VD (− 0.8199)	0.1252	0.1169	0.1018	0.0953
	Mean PD (− 0.7803)	0.5945	0.5614	0.4932	0.4854

Using post-hoc Tukey tests to correct for multiple comparisons, we found significant differences (p < 0.01) within each row when comparing groups with No DR (control and no DR) against groups with DR (mild and moderate-severe DR). Pearson's correlation coefficient (r) between each metric and Pixel Intensity Coefficient of Variance is reported in brackets
SVIC Superior vascular complex, DVC Deep vascular complex

ISSN: 2056-9920