1. A method for computing a measure of the ocular response of a test subject, in response to predetermined stimuli, which are presented on a stimulus presentation display that can be viewed by the eyes of the test subject, for viewing by the test subject, comprising: generating a stimulus including visual target movement in at least one of: a random pattern, a discontinuous movement, and an oblique direction on the stimulus presentation display, for display to the test subject; measuring, using an ocular measurement device, at least one of a temporal eye movement, a spatial eye movement, pupil size, and pupil reactivity of the test subject in responding to the visual stimulus presently displayed by the stimulus presentation device; and computing a score representative of at least one of the measured ability of the test subject's eyes to track the visual stimulus and the measured pupillary metrics of the test subject's eyes, comprising: scanning an iris of the test subject to generate a present set of iris characteristics that are unique to the test subject; retrieving from a test subject database baseline data comprising a previously generated set of iris characteristics that are unique to the test subject; determining a variance between the presently generated set of iris characteristics that are unique to the test subject and the retrieved baseline data comprising the previously generated set of iris characteristics that are unique to the test subject; authenticating, in response to the presently generated set of iris characteristics that are unique to the test subject corresponding to the retrieved previously generated set of iris characteristics that are unique to the test subject, the identity of the test subject; retrieving baseline data, indicative of the test subject's previously measured ocular responses, from a database; and determining a variance between the presently measured ability of the test subject's ocular responses and the retrieved baseline data indicative of the test subject's previously measured ocular responses.