Method and apparatus for measuring retinal blood flow

Details Method and apparatus for measuring retinal blood flow Method and apparatus for measuring retinal blood flow

1977-03-29

1979-09-04

Buczinski, S. C.

Optics: measuring and testing

Velocity or velocity/height measuring

With light detector

351 16, 356 39, 128691, 128745, G01B 1126

Patent

active

041666950

ABSTRACT:
Blood flow in retinal blood vessels is measured by directing laser radiation along an optical path into the eye and onto a blood vessel. Laser radiation reflected off moving blood corpuscles is directed back along the optical path and into a detector. This reflected laser radiation is mixed with a proportion of the original laser signal to determine the doppler shift produced by the moving blood corpuscles and hence blood velocity.

REFERENCES:
patent: 3137756 (1964-06-01), Gunther et al.
patent: 3373441 (1968-03-01), Zadig
patent: 3417754 (1968-12-01), Smart
patent: 3487835 (1970-01-01), Koester et al.
patent: 3503682 (1970-03-01), Botcherby
patent: 3511227 (1970-05-01), Johnson
Tanaka et al., Science; vol. 186; Nov. 29, 1974; p. 830.
Riva et al., Investigative Ophthalmology, vol. 11, No. 11, p. 936, Nov. 1972.

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