| US 7,614,745 B2 | ||
| System for analyzing eye responses to automatically determine impairment of a subject | ||
| Ronald Waldorf, Beverly Hills, Calif. (US); and Barbara Mauch, Inglewood, Calif. (US) | ||
| Assigned to VisioNetx, Inc., Centennial, Colo. (US) | ||
| Filed on Nov. 02, 2007, as Appl. No. 11/934,539. | ||
| Prior Publication US 2009/0115966 A1, May 07, 2009 | ||
| Int. Cl. A61B 3/14 (2006.01); A61B 3/10 (2006.01) | ||
| U.S. Cl. 351—209 [351/211] | 10 Claims |
| 1. An impairment determination system for automatically determining impairment of a subject based on pupil responses during
administration of a test protocol to said subject, as recorded in a time-wise sequence of digital images of at least one of
the subject's eyes taken during administration of said test protocol to said subject, comprising:
digital image processing means for identifying a location of a pupil of at least one of said subject's eyes in a plurality
of said digital images in said sequence of digital images;
pupil size means for computing a size of said pupil in said plurality of said digital images in said sequence of digital images;
and
impairment determining means, responsive to said location of a pupil and said size of said pupil in said plurality of said
digital images in said sequence of digital images, for automatically determining whether said subject is impaired, comprising:
stimulus means for recording a position of a stimulus target, used to direct movement of said subject's eyes, with respect
to each digital image in said time-wise sequence of digital images,
comparison means for contrasting said tracked eye movement in said sequence of digital images with said position of a stimulus
target, and
pattern means for identifying a departure of said tracked eye movement in said sequence of digital images with said position
of a stimulus target against at least one predetermined pattern, representative of eye movement of said subject corresponding
to a priorly administered stimulus protocol.
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