Bionic eye

The implants are said to be capable of completely restoring sight to blind patients, but only if their blindness was caused by a faulty retina, as in macular degeneration (suffered by millions of elderly people), diabetic retinopathy or any other degenerative eye disease.

Argus II	Bio-Retina
roughly four-hour procedure	operation only takes about 30 minutes can be done under local anesthesia.
Costing around $115,000	cost of about $60,000
involves the installation of an antenna behind the affected eye that works in with a pair of camera-equipped glasses, which send signals to the antenna. The antenna is wired into the retina which creates display for the brain to interpret.	does not incorporate an external camera but instead utilizes a vision-restoration sensor that is actually placed inside the eye, on top of the retina.

Reference:
http://mrunal.org/2012/09/snt-bionic-eye.html