Fig. 1

Retinal function imager capillary perfusion map compared to fluorescein angiogram. A The fluorescein angiogram (FA) demonstrates a small microaneurysm as a focal spot of hyper-fluorescence. B In comparison, the RFI capillary perfusion map (B) reveals multiple small microaneurysms and provides a higher level of detail of the capillary vessels. FA may demonstrate increased vascular permeability as dye leakage but this cannot be ascertained in a single snapshot