February 1982
Volume 22, Issue 2
Articles  |   February 1982
Retinal blood-flow visualization by means of laser speckle photography.
Investigative Ophthalmology & Visual Science February 1982, Vol.22, 255-259. doi:https://doi.org/
  • Views
  • PDF
  • Share
  • Tools
    • Alerts
      This feature is available to authenticated users only.
      Sign In or Create an Account ×
    • Get Citation

      J D Briers, A F Fercher; Retinal blood-flow visualization by means of laser speckle photography.. Invest. Ophthalmol. Vis. Sci. 1982;22(2):255-259. doi: https://doi.org/.

      Download citation file:

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

  • Supplements
This content is PDF only. Please click on the PDF icon to access.

We present the preliminary findings of an investigation into the visualization of retinal blood-flow distribution by means of single-exposure laser-speckle photography. The technique relies on the speckle effect produced when laser light is scattered at a diffusing surface and on the fact that the speckle will be averaged out to some extent when the surface concerned is moving. Spatial filtering techniques are used enhance the resulting variations in speckle contrast. The method is noncontacting and noninvasive, properties shared with the laser Doppler anemometry technique. Although it is less quantitative than the Doppler technique, it does have the advantage of giving an overall map of blood velocities instead of point measurements only, and we offer it as a complementary technique.


This PDF is available to Subscribers Only

Sign in or purchase a subscription to access this content. ×

You must be signed into an individual account to use this feature.