  Laser Doppler holography (LDH) is a full-field blood flow imaging technique
able to reveal human retinal and choroidal blood flow with high temporal
resolution. We here report on using LDH in the anterior segment of the eye
without making changes to the instrument. Blood flow in the bulbar conjunctiva
and episclera as well as in corneal neovascularization can be effectively
imaged. We additionally demonstrate simultaneous holographic imaging of the
anterior and posterior segments by simply adapting the numerical propagation
distance to the plane of interest. We used this feature to track the movements
of the retina and pupil with high temporal resolution. Finally, we show that
the light backscattered by the retina can be used for retro-illumination of the
anterior segment. Hence digital holography can reveal opacities caused by
absorption or diffusion in the cornea and eye lens.

Medical Physics