What are flythroughs and how does D-Lab eliminate them?

A flythrough is a small “snapshot” of a saccade (< 120 ms) that may be an artefact captured when the eye is moving from one Area of Interest to another Area of Interest, and passing through one or more intermediate Areas of Interest in between. With the Eliminate Flythroughs option in the AOI Management window, D-Lab removes any glances that were shorter than 120 ms.