The apparatus, which is built into the frame of the True Eyes Glasses, measures the area of the pupil as it dilates or constricts to a particular statement. The mean area of the pupil will be measured from the end point of the statement to the end of the specified time interval on a continuous basis. The resultant increase in area or decrease in area, if beyond a certain set criteria, will trigger a positive feedback response or negative feedback response on the glasses (indicated by a green LED light or a red LED light, respectively).

This device is unique in that it captures the pupillary response to a given stimulus (a particular statement) (triggered by either a voice activated signal or a mechanical signal) and feeds back that information to the individual in an expeditious, forthright manner.