Eye tracking is a technique used to determine where a person is looking.
In practice, however, these measures are difficult to achieve and require high-precision instruments as well as sophisticated data analysis and interpretation. Equipment which is used to do this are called eye trackers. Eye movements made during reading and picture identification provide useful information about the processes by which people understand visual input and integrate it with knowledge and memory. Researchers have used eye tracking for studying how people read, solve problems, look at pictures, scan instrument panels, and perform complex tasks. To date, we use eyetrackers for several studies funded by the Department of Defense.