A method and an apparatus are presented for determining ocular motor function in a patient. The patient is instructed to wear a pair of test glasses comprising a first lens having a first color and a second lens having a second color, where the first color and the second color differ. A light comprising a first color is projected onto a vertical surface, where the location of the light can be moved on the vertical surface. For each value of (i), an (i)th fixation point is then projected on the vertical surface, where the (i)th fixation point is one of (N) total fixation points and comprises the second color. For each value of (i), a perceived location is recorded upon receiving a signal that the (i)th fixation point is illuminated by the light. Finally, the (N) perceived locations are transformed into an ocular motor function map.
