A system and method for use of a mobile device to capture one or more images of one or more eyes of a user in a period before, during or after conducting one or more tests involving the eyes, vision or eye movements of the user. A position, motion, pattern or other characteristic of the position, motion or movement of one or more eyes may be evaluated in each of such images and comparisons of such positions, motions or movements in the various images may be made as part of a diagnostic effort for various medical conditions.