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(Investigative Ophthalmology and Visual Science. 1969;8:201-205.)
© 1969 by The Association for Research in Vision and Ophthalmology, Inc.

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Doppler Measurement of Vortex Vein Blood Flow in Animals

WILLIAM A. SCHLEGEL 1 and CARTERET LAWRENCE 1

1 Bishop Eye Research Center, Pacific Northwest Research Foundation, Seattle, Wash.

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.

Key Words: ocular blood flow tests • vortex veins • intraocular pressure change • Schiøtz tonometry • ocular blood circulation • rabbits






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