Towards the development of a new model for the oculomotor system

Pupillary light reflex involves many sensory and motor functions of the eye. For this reason, it represents an important emergency diagnostic tool and provides information to assess brain stem function. The pupil system can be considered in terms of input-output black-box behavior: light stimuli can be easily applied to the eyes, and the pupil size can be measured effortlessly and non-invasively. In this paper, a model for short-light-flash-induced transient pupillary light reflex is presented and preliminary experiments designed to test the model features are described. Results confirm that the developed pupillary light reflex model is suitable to describe the pupil oculomotor system exposed to short-light-flashes.