Eye examination apparatus employing polarized light probe

Details Eye examination apparatus employing polarized light probe Eye examination apparatus employing polarized light probe

1994-04-18

1998-08-04

Smith, Ruth S.

Surgery

Truss

Pad

128745, 351215, 351221, A61B 310

Patent

active

057878900

ABSTRACT:
Apparatus is provided for determining the topography, thickness, and fiber orientation of the nerve fiber layer at the fundus of the eye by measuring the polarization shift induced in a return beam of polarized light which is reflected at the ocular fundus from an incident beam of a known polarization state. A corneal polarization compensator effectively cancels the birefringent effects of the cornea and other portions of the eye anterior to the fundus, so that clinically meaningful results are produced.

REFERENCES:
patent: 4711540 (1987-12-01), Yoshino
patent: 4883061 (1989-11-01), Zeimer
patent: 5152295 (1992-10-01), Kobayashi et al.

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