System and method for drug screening and monitoring pupil reactivity and voluntary and involuntary eye muscle function

摘要

A system and method for drug screening for testing an iris for use of a chemical known to have a neurological effect that interferes with normal functioning of the iris and the voluntary muscles of the eye. The system and the method involve testing and documenting reactivity of the iris under known light conditions and can test for the presence of horizontal nystagmus. The identity of a subject can be confirmed by applying an iris pattern recognition model of a captured image of an iris of the eye compared with an image of an iris stored in a library of baseline color or a library of infrared eye images. The system and the method involves providing alarms when one eye pupil diameter exceeds or falls below the opposite eye pupil diameter and when horizontal gaze nystagmus has been determined to be present.

主权项

1. A system for drug screening comprising:
a. an administrative data storage; b. an administrative processor connected to a network and the administrative data storage, wherein the administrative data storage contains computer instructions to instruct the administrative processor to:
(i) present a human machine interface to a display;(ii) receive information from the human machine interface to identify a subject;(iii) locate previous records of the subject; and(iv) turn a drug screening device on and off; and c. the drug screening device connected to the administrative processor via the network, the drug screening device comprising:
(i) a frame configured to fit flush with a face of the subject;(ii) a camera attached to the frame, the camera configured to focus simultaneously on eyes of the subject;(iii) a light meter configured to measure ambient light within the frame;(iv) a partition in the frame separating the camera from the eyes of the subject;(v) a target display mounted to the partition displaying a still image and a subsequent animated target image to the eyes of the subject;(vi) at least one of a plurality of tactile sensors mounted to the frame configured to verify contact with the face of the subject to prevent extraneous light from entering the frame;(vii) a microprocessor with a data storage attached to the frame controlling the camera, receiving signals from the light meter, controlling the target display, and monitoring signals from the at least one of the plurality of tactile sensors; and(viii) a power supply attached to the frame electrically connected to the camera, the light meter, the target display, the microprocessor and the at least one of the plurality of tactile sensors.