Artificial Cornea
While contact lenses have been around for a long time, this new product actually replaces the cornea, repairing vision problems permanently. Quite a few scientific advancements came together for this product, such as the ability to prevent biofilms from forming on the lens (which cause clouding/fouling) and biofriendly, strong and forgiving materials.
http://www.fraunhofer.de/fhg/EN/press/pi/2007/10/ResearchNews102007Top ic3.jsp via engadget
