While FOVE is focusing its eye tracking research primarily on user interface input and making it quicker than using a mouse or a controller the possibilities are endless. With an investment from Samsung Ventures it reached its Kickstarter milestone and will now feature Lighthouse motion tracking.
Head tracking + eye tracking + positional tracking
100 degree Field of Vision
2560 x 1440 Display
Valve Lighthouse, OpenVR, Unity, CryEngine
"If you know where the user is looking, you can simulate depth of field by applying a fake blur to the scene at the appropriate depths." - Road to VR