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Abstract
The blood flow icas measured continuously in the intact vortex vein of the anesthetized rabbit using an ultrasonic Doppler flowmeter toith a frequency response of approximately 4 Hz. Blood flow correlated well toith perfusion pressure (arterial pressure minus intraocular pressure). The intraocidar pressure was changed stepwise by peifusion from a saline reservoir. Tonometry toas performed with the eye connected to the reservoir and with the valve to the reservoir closed. Blood flow decreased with decreasing perfusion pressure in all cases.