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Proceedings Paper

Fluorescent blood cell angiography
Author(s): Joshua Ben-nun M.D.; Ian J. Constable
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Paper Abstract

Fluorescein angiography is currently the main method for evaluation of the retinal vascular patency. Ashton noted that capillary patency to the small fluorescein molecule may differ from that of the larger red blood cells. He concluded that fluorescein angiography is not able to demonstrate a developing stenosis, that might be the precipitating cause of a later capillary closure in various microvasculopathies. Sarelius et al have shown, in hamster cheek pouch and cremaster muscle, that fluorescently labeled erythrocytes in known concentrations can be used for the direct measurement of capillary flow parameters. The only assumption that this method relies on, is that the labeled cells are rheologically normal and therefore reflect the behavior of the total cell population. We have developed a new method for an in-vivo, real-time demonstration of the blood cell flow in the retinal capillary net. Based on the assumption presented by Sarelius et al, measurement and analysis of the retinal capillary blood cell flow is also possible from the results achieved by the new method.

Paper Details

Date Published: 23 June 1994
PDF: 6 pages
Proc. SPIE 2126, Ophthalmic Technologies IV, (23 June 1994); doi: 10.1117/12.178588
Show Author Affiliations
Joshua Ben-nun M.D., Assaf-Hroffe Medical Ctr. (Israel)
Ian J. Constable, Lions Eye Institute (Australia)

Published in SPIE Proceedings Vol. 2126:
Ophthalmic Technologies IV
Jean-Marie A. Parel; Qiushi Ren, Editor(s)

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