The excellent performance of this technique allows to resolve blood flow in individual capillaries. The size of the measurement field at the retina is 10 by 2.5 up to 20 by 5 . Within this field, laser Doppler measurements are performed at 256 by 64 independent locations. Total data acquisition time is 2 seconds. No pupil dilation is necessary.
Data processing requires only a minute.
Two-dimensionally resolved perfusion maps are computed. The perfusion maps provide visualization of the network of perfused capillaries and blood vessels and allow to quantifying the local values of flow, volume, and velocity of the red blood cells. The operation software runs on a standard personal computer. Available in combination with the Heidelberg Retina Tomograph.