Fig. 4

Distribution of the Pixel Intensity Coefficient of Variances (PICoV) in both the superficial vascular complex (SVC) and deep vascular complex (DVC), stratified by diabetic retinopathy (DR) severity. Post-hoc Nemenyi tests were conducted after significant Kruskal–Wallis tests to compare the PICoV values between each DR group within both vascular complexes. P-values of significant differences determined via post-hoc Nemenyi tests are shown; a p-value of < 0.05 indicates significance between the two groups with Type 1 error inflation correction included by the post-hoc Nemenyi test. Each circle represents a single PICoV value associated with 10 serial optical coherence tomography angiography images