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

Mikael Agopov; Boris I. Gramatikov; Yi Kai Wu; Kristina Irsch; David L. Guyton

doi:10.1364/AO.47.001048

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

Mikael Agopov, Boris I. Gramatikov, Yi Kai Wu, Kristina Irsch, David L. Guyton

School of Medicine

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

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 language	English (US)
Pages (from-to)	1048-1053
Number of pages	6
Journal	Applied Optics
Volume	47
Issue number	8
DOIs	https://doi.org/10.1364/AO.47.001048
State	Published - Mar 10 2008

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Engineering (miscellaneous)
Electrical and Electronic Engineering

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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.",

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AU - Agopov, Mikael

AU - Gramatikov, Boris I.

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AU - Irsch, Kristina

AU - Guyton, David L.

PY - 2008/3/10

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AB - 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.

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

Abstract

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