The eye tracker is a physical device that uses an infrared-like light source and a high-definition camera in combination to record the direction of light that is reflected by the cornea. The computerized calculation of the position of the eye in space will determine the point where the gaze is focused at that precise moment. Therefore, with this system it is possible to measure and study visual behavior even at the level of small eye movements. With the eye tracking software it will therefore be possible to reproduce a visual map that describes how the person has explored the elements of a scene.