According to Microsoft’s official blog, now you can use eye control in Windows 10 Insider Preview. You can control an on-screen mouse, keyboard, and text-to-speech experience using your eyes. How Microsoft smart? This is great innovation of Microsoft and you need eye-tracking device to use this feature.
Now, it is beta version and you need to purchase Tobii Eye-Tracker to use Microsoft’s eye-control feature. If you want to know how to connect and configure Tobii Eye-Tracker, just read from Microsoft blog.