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Biomedical Optics Express

Biomedical Optics Express

  • Editor: Joseph A. Izatt
  • Vol. 2, Iss. 7 — Jul. 1, 2011
  • pp: 1852–1860

Flicker-induced changes in retinal blood flow assessed by Doppler optical coherence tomography

Yimin Wang, Amani A. Fawzi, Ou Tan, Xinbo Zhang, and David Huang  »View Author Affiliations


Biomedical Optics Express, Vol. 2, Issue 7, pp. 1852-1860 (2011)
http://dx.doi.org/10.1364/BOE.2.001852


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Abstract

We used Doppler Fourier-domain optical coherence tomography (OCT) to investigate flicker-induced changes of total retinal blood flow. Total retinal blood flow was measured by summing flows in veins imaged in double-circular scans around the optic disc. In 3 healthy volunteers, total retinal blood flow was measured before and 10-15 seconds after 30 seconds of flicker stimulation. The average blood flow increased 22.2% (p = 0.002). The total venous and arterial vessel cross-sectional area increased 11.3% (p < 0.001) and +2.7% (p = 0.28) respectively. The average venous and arterial flow velocity were calculated indirectly by dividing total retinal blood flow by total venous and arterial cross-sectional areas. They also increased by 8.8% (p = 0.046) and 18.3% (p = 0.004), respectively. These results show that human retinal blood flow increases after visible flicker stimulation, and this could be measured with OCT.

© 2011 OSA

OCIS Codes
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(170.4470) Medical optics and biotechnology : Ophthalmology
(170.4500) Medical optics and biotechnology : Optical coherence tomography
(280.2490) Remote sensing and sensors : Flow diagnostics

ToC Category:
Ophthalmology Applications

History
Original Manuscript: March 8, 2011
Revised Manuscript: May 25, 2011
Manuscript Accepted: June 3, 2011
Published: June 6, 2011

Virtual Issues
In vivo Microcirculation Imaging (2011) Biomedical Optics Express

Citation
Yimin Wang, Amani A. Fawzi, Ou Tan, Xinbo Zhang, and David Huang, "Flicker-induced changes in retinal blood flow assessed by Doppler optical coherence tomography," Biomed. Opt. Express 2, 1852-1860 (2011)
http://www.opticsinfobase.org/boe/abstract.cfm?URI=boe-2-7-1852


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