The association between retinal vascular geometry changes and diabetic retinopathy and their role in prediction of progression – an exploratory study

Table 5 Arteriolar and venular geometrical features for progressors group

Progressors arteriolar data
Retinal parameter	Baseline visit	Penultimate visit	Final visit	p value
Mean ± (STD)	Baseline visit	Penultimate visit	Final visit	p value
Branching Angle θ ₁ (Degrees)	24.94 ± (14.0)	25.77 ± (11.6)	24.71 ± (11.9)	0.924
Branching Angle θ ₂ (Degrees)	54.58 ± (22.8)	54.47 ± (22.1)	57.87 ± (18.7)	0.675
Progressors venular data
Retinal parameter	Baseline visit	Penultimate visit	Final visit	p value
Mean ± (STD)	Baseline visit	Penultimate visit	Final visit	p value
Branching Angle θ ₁ (Degrees)	27.72 ± (15.7)	27.72 ± (15.4)	27.47 ± (15.2)	0.995
Branching Angle θ ₂ (Degrees)	49.87 ± (18.4)	47.43 ± (17.7)	51.10 ± (16.2)	0.561

Means and Standard deviations for the geometrical features in the progressors group baseline, penultimate and final visits for the arteriolar and venular data. P value for ANOVA test is shown.

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