And this looks interesting
https://prelaunch.com/projects/inseye-enter-into-a-new-realm-inseye-enter-into-a-new-realm
Inseye Lumi: Enter Into a New Realm
Upgrade your Meta Quest 2 and Meta Quest 3 with Inseye Lumi’s AI-based, camera-free eye tracker. Enhance your VR experience with predictive foveated rendering optimizing performance and visual quality. Bring advanced eye-tracking capabilities to your headset with Inseye Lumi the future of VR."
