I received an email the other day, paraphrasing:
I was very intrigued by the attached file article in this morning's New York Times. I have a good friend (22 year old son of a friend) who has had severe cerebral palsy since birth. He is very smart (taught himself 5 languages) but cannot speak and has no motor control except for his eyes and a little bit of head movement. He tried some kind of eye control device for his computer a few years ago but it didn't work well…If my friend could do anything independently on his computer it would totally change his life. I would like him to be able to try out the latest technological advances...
I thought I would share my response to him with you too.
I can suggest a few off the shelf technologies that you can investigate. We’re using a newer eye gaze sensor that has much better results than previous eye gaze technologies: the Tobii EyeX. You can order it for $139 from Tobii’s website.
For an end to end solution, the Tobii PC Eye Go plus a Surface Pro 3 or 4 is an excellent starting point. This provides the ability to interact with Windows by simulating a mouse as well as a keyboard.
Your friend can also get assistance from Microsoft's Disability Answer Desk which is a great group of people who specialize in helping people living with disabilities.
Hopefully this helps a few more people get started. If you have more questions about getting started with eye gaze technologies, feel free to send them to me in email.