[Doppler sonographic findings in the central retinal artery and vein]

In a group of healthy subjects of varying ages, the flow velocities in the central retinal artery and vein were measured with a B-mode-guided pulsed duplex scanner. The first measurements were taken in the unaffected eye. The maximal systolic flow velocities ranged from 2.9 to 10 cm/s (mean 5.7 cm/s) in the central vein and from 4 to 20 cm/s (mean 9.5 cm/s) in the central artery. The correct assignment of the measuring points in the papillary region was verified by the close correlation between the flow velocity and artificially elevated intraocular pressure. After evaluating 158 clinical examinations, we try to outline the diagnostic possibilities of the method with respect to single observations in patients with ocular circulatory disturbances.