A method of determining a point or object on a digital display that is being gazed at by a viewer by capturing an image of the viewer's iris and at least one other feature of the viewer's face, calculating an imaginary line from the object being viewed, to the iris and continuing to an imaginary center of the viewer's eye, then calculating a position of the center of the eye relative to the other feature of the viewer's face. Upon a change in the position of the eye and the iris, a calculation can be made of a position of the iris in a second image. An imaginary line can be extended out from the center of the eye, through the new position of the iris onto the digital display to determine the point of gaze of the viewer.