Will this prompt Dr Oakley to change his name to “Dr Google”?

Talk about “the vision thing”. Now there are “Google Glasses”.

Google has unveiled its designs for "augmented reality glasses", which layer emails, video chat, Google searches and GPS directions over the wearer's eyes. The glasses, which are voice-controlled, are a product of the Google X blue-sky ideas lab.

Google put out a video of how the prototype works. In it the wearer gets directions, takes pictures and conducts video chats all through his glasses.

Google said: "We think technology should work for you - to be there when you need it and get out of your way when you don’t.

"We're sharing this information now because we want to start a conversation and learn from your valuable input. So we took a few design photos to show what this technology could look like and created a video to demonstrate what it might enable you to do."