There is a Turkish ALS patient, he has a youtube channel, he is creating youtube videos, podcasts, streams on twitch thanks to eye tracker.

He is using tobii eye tracker. There is a video he made about the eye tracker. It's in Turkish but you can see how he uses it.

https://www.youtube.com/watch?v=pzSXyiWN_uw

Here is a article about him in English: https://www.dexerto.com/entertainment/twitch-streamer-with-a...