November 1972
Volume 11, Issue 11
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Articles  |   November 1972
Laser Doppler Measurements of Blood Flow in Capillary Tubes and Retinal Arteries
Author Affiliations
  • CHARLES RIVA
    Retina Foundation, Boston, Mass., Department of Physics and Center for Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Mass.
  • BENJAMIN ROSS
    Retina Foundation, Boston, Mass., Department of Physics and Center for Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Mass.
  • GEORGE B. BENEDEK
    Retina Foundation, Boston, Mass., Department of Physics and Center for Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Mass.
Investigative Ophthalmology & Visual Science November 1972, Vol.11, 936-944. doi:
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    • Get Citation

      CHARLES RIVA, BENJAMIN ROSS, GEORGE B. BENEDEK; Laser Doppler Measurements of Blood Flow in Capillary Tubes and Retinal Arteries. Invest. Ophthalmol. Vis. Sci. 1972;11(11):936-944.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

We have used the technique of Laser Doppler Velocimetry (LDV) to measure the velocity of blood folowing in retinal arteries of the rabbit. This technique does not require mechanical perturbation of the blood flow or alteration of chemical environment. It is more precise and clinically less demanding than previous methods, and gives information on the velocity distribution as well as the average velocity. We have also used LDV to measure the velocity distribution of whole blood, flowing in 200 ยต diameter capillary tubes; our measurements agree with previous experimental results for the flow of erythrocyte ghost suspensions in larger tubes. Similar measurements on dilute suspensions of polystyrene spheres agree well with the hydrodynamic predictions.

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