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September 1971

Disappearance of Intravitreous 133Xenon: Its Relation to Ocular Blood Flow

Author Affiliations

Aliene Coon, San Francisco
From the Eye Research Laboratories, Deoartment of Ophthalmology, and the Clinical Laboratories, San Francisco General Hospital, University of California School of Medicine, San Francisco.

Arch Ophthalmol. 1971;86(3):314-320. doi:10.1001/archopht.1971.01000010316015

The disappearance of locally-injected 133xenon has been previously established in various tissue and organs as a reliable method for measuring regional blood flow. This paper describes the application of 133Xe disappearance to the measurement of ocular blood flow. Although this method offers definite advantages over other approaches to estimating blood flow in the eye, the actual measurement was considerably less than that of a reference technique. The primary measurement of the 133Xe method, like other methods of in vivo determination, is dependent upon blood flow; however, this measurement cannot be isolated from the influence of other processes, such as the physical diffusion time of 133Xe through the vitreous.

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