Eye Tracking in Virtual Reality

The intent of this paper is to provide an introduction into the bourgeoning field of eye tracking
in Virtual Reality (VR). VR itself is an emerging technology on the consumer market,
which will create many new opportunities in research. It offers a lab environment with high
immersion and close alignment with reality. An experiment which is using VR takes place
in a highly controlled environment and allows for a more in-depth amount of information to
be gathered about the actions of a subject. Techniques for eye tracking were introduced more
than a century ago and are now an established technique in psychological experiments, yet
recent development makes it versatile and affordable. In combination, these two techniques
allow unprecedented monitoring and control of human behavior in semi-realistic conditions.
This paper will explore the methods and tools which can be applied in the implementation
of experiments using eye tracking in VR following the example of one case study. Accompanying
the technical descriptions, we present research that displays the effectiveness of the
technology and show what kind of results can be obtained when using eye tracking in VR.
It is meant to guide the reader through the process of bringing VR in combination with eye
tracking into the lab and to inspire ideas for new experiments.