This is for 2016, but I found it. That's the article of Futurism For contact lens Sony patents, you can record videos. Think of Google Glass. But do not notice strangers. Unless a stranger is a terminator. Please remember that I have not seen anything since then. Of course, patents are always easier than mass production with profitable. However, it suggests enormous possibilities. I will focus on this technology.
check it out: Discovery: Sony's patent of contact lens that can record video