Patent ID: 7614745

Claim:
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.