A headset with eye tracking does exactly what it says on the tin. Tracking your eye movement is important as it opens up new doors for VR outside of gaming. For example, it could make for a more realistic telepresence, enabling realistic eye contact between avatars. Effective eye tracking can also make for crisper VR images with lower processing power, by only rendering the aspects of a scene that you’re looking at in high resolution. This reflects what our eyes already do naturally: we see most clearly in the centre of our FOV, while the periphery of our vision is blurry.