Abstract: The term Eye gaze communication refers to operating computer system by tracking the eye gaze of the human. Eye tracking is the process of tracking the moment of eye and determining where the user is looking on the screen. Eye gaze technology is hand free or voice free technology i.e. without using hand or voice we can operate the computer. Persons with cerebral palsy, spinal cord injury, brain injury, brainstem stroke, muscular dystrophy etc. can use this system. This system is also called as vision-controlled communication system. In this type of communication system control keys are displayed on the screen. By looking at the control keys user can operate computer, type, access internet, send email etc. The system is useful to enhance the life of disabled person. Firstly we are presenting what actually the eye gaze communication system is and the key elements. We are evaluating the behaviour of user when they are using the eye gaze interfacing. Used different methods of eye tracking such as electro-oculography, scleral search coil, infrared oculography, video oculography, and different approaches i.e. feature based approach and appearance based approach etc. We have tried to compare surveys based on some parameters such as input, tracking type, sensing technology etc.

Keywords: Eye gaze communication, eye tracking, vision controlled communication, voice free technology.