Eyetracking has been a heavily debated subject within the field of User Experience Design and in particular within the Usability community. Some argue that eye fixations don’t necessarily equal attention or understanding, and question whether eyetracking should be used to support traditional usability findings. However, the other side argues that when eye tracking data is used in conjuction with traditional usability techniques, it can provide deep insight into where participants look during a task which can help us determine why usability issues are present within an interface.
If you’re interested in reading more about the various arguments regarding eye tracking’s use in usability studies, take a look at these great articles:
Assuming you’ve bought into the value that eyetracking can bring to usability studies, the rest of this post will explore the specific eyetracking metrics you can use to best support usability findings.