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.

© 2008 Optical Society of America

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2005 (1)

2004 (1)

1999 (1)

1992 (1)

A. W. Dreher and K. Reiter, “Scanning laser polarimetry of the retinal nerve fiber layer,” Proc. SPIE 1746, 34-41(1992).

1991 (1)

1990 (1)

R. Weinreb, A. Dreher, A. Coleman, H. Quigley, B. Shaw, and K. Reiter, “Histopathologic validation of Fourier-ellipsometry measurements of retinal nerve fiber layer thickness,” Arch. Ophthalmol. 108, 557-560 (1990).

1988 (1)

1987 (1)

1978 (1)

W. Cope, M. Wolbarsht, and B. Yamanashi, “The corneal polarization cross,” J. Opt. Soc. Am. 68, 1149-1140 (1978).

1975 (1)

F. Bettelheim, “On optical anisotropy of the lens fiber cells,” Exp. Eye Res. 21, 231-234 (1975).

Arch. Ophthalmol. (1)

R. Weinreb, A. Dreher, A. Coleman, H. Quigley, B. Shaw, and K. Reiter, “Histopathologic validation of Fourier-ellipsometry measurements of retinal nerve fiber layer thickness,” Arch. Ophthalmol. 108, 557-560 (1990).

Exp. Eye Res. (1)

F. Bettelheim, “On optical anisotropy of the lens fiber cells,” Exp. Eye Res. 21, 231-234 (1975).

J. Opt. Soc. Am. (1)

W. Cope, M. Wolbarsht, and B. Yamanashi, “The corneal polarization cross,” J. Opt. Soc. Am. 68, 1149-1140 (1978).

J. Opt. Soc. Am. A (4)

Opt. Express (2)

Proc. SPIE (1)

A. W. Dreher and K. Reiter, “Scanning laser polarimetry of the retinal nerve fiber layer,” Proc. SPIE 1746, 34-41(1992).

Other (8)

D. L. Guyton, D. G. Hunter, S. N. Patel, J. C. Sandruck, and R. L. Fry, “Eye fixation monitor and tracker,” U.S. patent 6,027,216 (22 February 2000).

D. Sliney and M. Wolbarsht, Safety with Lasers and Other Optical Sources (Plenum, 1980).

L. Flom and A. Safir, “Iris recognition system,” U.S. patent 4,641,349 (3 February 1987).

R. Hill, “Apparatus and method for identifying individuals through their retinal vasculature patterns,” U.S. patent 4,109,237 (22 August 1978).

R. Hill, “Rotating beam ocular identification apparatus and method,” U.S. patent 4,393,366 (12 July 1983).

R. Hill, “Fovea-centered eye fundus scanner,” U.S. patent 4,620,318 (28 October 1986).

R. Hill, “Eye fundus optical scanning system and method,” U.S. patent 5,532,771 (2 July 1996).

J. Marshall and D. Usher, “Method for generating a unique and consistent signal pattern for identification of an individual,” U.S. patent 6,757,409 (29 June 2004).

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