Google does trial project glasses with Augmented-Reality technology. According to Nick Bilton from The New York Times, this lens has a shape like a sports glasses, with little pads on the nose. When worn, Google will display interface fully integrated directly on top of your vision.
The project, called Project Glass is a glasses that have been computerized. We can do things like taking pictures, record video, telephone, and even be able to access Google services, such as Google Maps, Google+, and others.
Currently, Project Glass has not sold freely and still under development by Google [X], a secret laboratory owned by Google.
For more information, you can see it in g.co/projectglass. As for the video example of Project Glass usage in everyday life, you can see it on YouTube.