Use of retinal nerve fiber layer birefringence as an addition to absorption in retinal scanning for biometric purposes

Research output: Contribution to journalArticle

Abstract

We built a device sensitive to the birefringence of the retinal nerve fiber layer for biometric purposes. A circle of 20° diameter on the retina was scanned around the optic disk with a spot of light from a 785 nm laser diode. The nonbirefringent blood vessels indenting or displacing the retinal nerve fiber layer were seen as "blips" in the measured birefringence-derived signal. For comparison, the reflection-absorption signature of the blood vessel pattern in the scanned circle was also measured. The birefringence-derived signal proved to add useful information to the reflectance-absorption signature for retinal biometric scanning.

Original languageEnglish (US)
Pages (from-to)1048-1053
Number of pages6
JournalApplied Optics
Volume47
Issue number8
DOIs
StatePublished - Mar 10 2008

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nerve fibers
biometrics
Biometrics
Birefringence
birefringence
blood vessels
Blood vessels
Scanning
scanning
Fibers
signatures
retina
Semiconductor lasers
Optics
semiconductor lasers
optics
reflectance

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Use of retinal nerve fiber layer birefringence as an addition to absorption in retinal scanning for biometric purposes. / Agopov, Mikael; Gramatikov, Boris; Wu, Yi Kai; Irsch, Kristina; Guyton, David Lee.

In: Applied Optics, Vol. 47, No. 8, 10.03.2008, p. 1048-1053.

Research output: Contribution to journalArticle

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