Patent ID: 8393734

Claim:
A method of screening a pupil of a subject to determine whether the pupil reflex resembles a canonical pupil reflex comprising the steps of: stimulating said pupil with a stimulus source; using a pupilometer, tracking the pupil's constriction response, wherein the step of tracking the pupil constriction response begins when the pupil is stimulated; using the pupilometer, collecting a plurality of data points, each data point corresponding with a diameter of the pupil at a specific point in time while the pupil is being stimulated; using the pupilometer, generating a pupil data profile by compiling the data points; and using the pupilometer, determining whether the following four conditions are met: a. no more than two data points exist representing the same pupil diameter at separate points in times during a period of no more than about four seconds; b. a first phase of the pupilary reflex response exists, wherein said first phase is characterized by a period of non-constriction immediately subsequent to stimulating the pupil, said first phase having a duration of greater than about 100 msec and less than about 1000 msec; c. if two data points exist representing the same pupil diameter at two separate points in times, then the duration of time between said two separate points in time is greater than about 100 msec; and d. during the first phase of the pupilary reflex, the diameter of the pupil does not increase before it decreases; wherein if the pupilometer determines that one or more of said conditions is absent, the pupilometer provides an output that indicates that the pupil reflex does not resemble a canonical reflex.