1. An article of manufacture comprising a microprocessor and a computer readable medium comprising computer readable program code disposed therein for determining ocular motor function in a patient, the computer readable program code comprising a series of computer readable program steps to effect: activating, for each value of (i), an (i)th light-emitting device disposed in a screen comprising a total of (N) light emitting devices, wherein the illuminated (i)th light-emitting device emits a light comprising the first color, wherein (N) is greater than 1, and wherein (i) is greater than or equal to 1 and less than or equal to (N); for each value of (i), synchronously receiving an (i)th screen image upon receiving a signal that the (i)th activated light-emitting device is illuminated by a light comprising the second color; and transforming (N) screen images into an ocular motor function map.