Fundus camera-based retinal laser doppler velocimeter

Details Fundus camera-based retinal laser doppler velocimeter Fundus camera-based retinal laser doppler velocimeter

1980-12-31

1983-09-06

Buczinski, S. C.

Optics: measuring and testing

Velocity or velocity/height measuring

With light detector

128666, 351206, 351221, G01P 336, A61B 314

Patent

active

044026013

ABSTRACT:
A bidirectional laser Doppler velocimeter provides absolute measurement of the speed of red blood cells flowing in individual retinal vessels. A standard retinal camera is used, and the need for a contact lens for the subject eye is eliminated. The laser beam is delivered to the eye through the fundus illumination optical system of the camera. Target fixation is done with the eye under examination. The measurements are independent from the ocular refraction; only the axial length of the eye need be determined. The instrument markedly simplifies the technique of retinal blood flow measurement.

REFERENCES:
patent: 3770342 (1973-11-01), Dudragne
patent: 3780979 (1973-12-01), Guillebon
patent: 3941477 (1976-03-01), Schodl
patent: 3954329 (1976-05-01), Pomerantzeff
patent: 4102563 (1978-07-01), Matsumura et al.
patent: 4102565 (1978-07-01), Takizawa
patent: 4109647 (1978-08-01), Stern et al.
patent: 4142796 (1979-03-01), Riva
patent: 4166695 (1979-09-01), Hill et al.
patent: 4206999 (1980-06-01), Keller
C. E. Riva et al., Applied Optics, Jul. 1, 1979, vol. 18, No. 13, p. 2301.

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