Handheld four-wavelength retinal vessel oximeter

Larry C. Heaton, Matthew H. Smith, Kurt R. Denninghoff, Lloyd W. Hillman

Research output: Contribution to journalConference articlepeer-review

9 Scopus citations


Several techniques for measuring the oxygen saturation of blood in retinal vessels have been reported. One interesting application of retinal vessel oximetry is the identification of occult blood loss in trauma victims. However, all the devices described to date are too bulky and cumbersome to be used in a trauma bay or in the field. We present a design for a handheld instrument that performs four-wavelength retinal vessel oximetry. This device is comparable in size and weight to a commercially available camcorder, and is suitable for use in the trauma bay. The compact size of this device could also extend its applications beyond traditional clinical settings, as it could be used by primary care physicians and home health care workers for the screening and monitoring of ophthalmic diseases. Principles of operation and preliminary data from the device will be described.

Original languageEnglish (US)
Pages (from-to)227-233
Number of pages7
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 2000
EventOphthalmic Technologies X - San Jose, CA, USA
Duration: Jan 22 2000Jan 23 2000

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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