A review of eye tracking systems and its applications

Eye movements are a continuous part of sensory perception of a scene. Whenever we interact with the visual environment we generate saccadic eye movements. Saccades move the eyes in a ballistic manner from one point to another, interspersed by fixations where the eye is stable. Scan paths describe the sequence of fixations and saccades. This eye movement signature data can be collected as a part of a person’s daily activities and can be analyzed to detect eye diseases, psychological disorders. Eleven papers which use different techniques and applications of eye tracking are reviewed here. Eye tracking systems including visible spectrum and infrared spectrum imaging, bright pupil and dark pupil techniques are reviewed and reported. Various applications of eye tracking systems including neurological, psychological, usability studies, biomedical applications, Human Computer Interaction applications are discussed. Keywords– Eye tracking, eye movement signature