A system and method for assessing visual processing of a human subject is provided that allows measurement of vergence facility among other measurements. The system and method present a sequence of questions on a dichoptic display that request the identification of an item with stereo disparity. The questions alternate between the item having crossed stereo disparity and uncrossed stereo disparity in order to stress the vergence facility by forcing the eyes to diverge and converge to identify the item with stereo disparity. The time period for providing a response can be compared to a normative value that is equivalent to approximately 15 vergence cycles per minute to determine an abnormal or normal vergence facility.
