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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 1 — Jan. 1, 1999
  • pp: 258–267

Optimum wavelength combinations for retinal vessel oximetry

Matthew H. Smith  »View Author Affiliations


Applied Optics, Vol. 38, Issue 1, pp. 258-267 (1999)
http://dx.doi.org/10.1364/AO.38.000258


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Abstract

Several investigators have demonstrated techniques for noninvasive measurement of the oxygen saturation of blood in retinal arteries and veins. These techniques have been based on measuring the optical density of a retinal vessel at multiple wavelengths and on calculating the oxygen saturation on the basis of the known absorption coefficients of hemoglobin and oxyhemoglobin. A technique is presented for determining the optimum wavelengths for retinal oximetry measurements. What is believed to be a novel wavelength combination of 488, 635, and 905 nm is found to provide excellent oxygen sensitivity across a broad range of typical vessel diameters and saturations. The use of this wavelength combination should allow for the most accurate retinal saturation measurements made to date.

© 1999 Optical Society of America

OCIS Codes
(170.1470) Medical optics and biotechnology : Blood or tissue constituent monitoring
(170.4460) Medical optics and biotechnology : Ophthalmic optics and devices
(300.1030) Spectroscopy : Absorption

History
Original Manuscript: July 2, 1998
Revised Manuscript: October 9, 1998
Published: January 1, 1999

Citation
Matthew H. Smith, "Optimum wavelength combinations for retinal vessel oximetry," Appl. Opt. 38, 258-267 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-1-258


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