Easy-algorithm in detecting left/right eye movements for playing pinball

Eye movement is a part of biofeedback that could be considered as a trigger for control purpose. In this paper, left movement and right movement of eyes is studying. The differences between eye movements for control and movement for identification and interaction with others are also considered. The system that built for implementation is pinball game. Pinball game uses serial-threshold algorithm for identifying direction of eye movements. With time limit 0.5 second for eye movements, the result that achieved with this method is +/- 80% with 1 second time response.