Fig. 6

Comparison of Pixel Intensity Coefficient of Variance (PICoV) distributions in each quadrant (ST = Superior Temporal; SN = Superior Nasal; IT = Inferior Temporal; IN = Inferior Nasal) of both the superficial vascular complex (SVC) and the deep vascular complex (DVC). Quadrants are divided equally from 6 × 6 mm fovea-centered OCTA images. Significant Kruskal–Wallis tests provided evidence that there were inter-quadrant PICoV differences in a pooled analysis of all DR groups. Post-hoc Tukey tests with correction of Type 1 error inflation from repeated comparisons were conducted and the resulting p-values of significant relationships are shown. Each circle represents a PICoV value unique in quadrant and eye. Means of each group are shown by X