Fig. 1

Retinal images of a T1D patient with poor glycemic control and a T1D patient with good glycemic control. Comparison of retinal arteriolar caliber and retinal arteriolar branching angle between patient with poor glycemic control (a) and patient with good glycemic control (b). Blue arrows are pointing to the width of retinal arterioles while red angles are indicating retinal arteriolar branching angle. The patient with poor glycemic control had a wider average retinal arteriolar caliber (147.8 vs. 112.3 μm) and a larger average retinal arteriolar branching angle (110.4 vs. 90.0°) than the patient with good glycemic control