Fig. 3

Two healthy control (top) and two diabetic patients (bottom) examples. From top to bottom: cases HC03, HC08, DM02 and DM04. Left: color fundus photography with the rtx1 shown overlapped in grayscale. Middle/Right: full-size rtx1 images (4 × 4 degree field-of-view, 1500 × 1500 pixels) after the contralateral/ipsilateral stimulation. Analyzed vessel segment in blue. Additional example cases can be seen in the Supplementary figures.