  Laser Doppler holography (LDH) is a full-field imaging technique that was
recently used in the human eye to reveal blood flow contrasts in the retinal
and choroidal vasculature non-invasively, and with high temporal resolution. We
here demonstrate that the ability of LDH to perform quantitative flow
measurements with high temporal resolution enables arteriovenous
differentiation in the retina and choroid. In the retina, arteries and veins
can be differentiated on the basis of their respective power Doppler waveforms.
Choroidal arteries and veins can instead be discriminated by computing low and
high frequency power Doppler images to reveal low and high blood flow images,
respectively.
