The eyes have it!

Remember the $6 million man, with that squint, seeing through things. Technology is catching up to him. Millions of people struggle with eyesight. Certain conditions like macular degeneration and retinitis pigmentosa, damage photo-receptors in the eye. Now thanks, to a biotechnology, specifically, the Argus II Retinal Prosthesis System, some people will have the chance to see again (detect light and dark).
It works like this; a digital camera is built into a pair of glasses, the glasses captures images in real time and sends the messages to a microchip that has been inserted in the brain (six-hour operation, above the ear or under eye). This microchip processes the video (to a handheld unit) into electrical impulses that are then sent to the radio-transmitter in the glasses. This radio transmitter then transmits wirelessly to the implant (microchip). The receiver in the microchip sends impulses to the retinal implant. This implant becomes the photoreceptors that receive the light patterns and pass them to the brain. An image is seen as light or dark pixels, these pixels (in the form of electrical impulses) upon reaching the retinal implant excite the electrode array (artificial photoreceptors). The receptors accept these digitally encoded patterns and send them to the optic nerves, and then the brain interprets the patterns as a tree.
Hopefully, soon the bionic legs are coming.
http://health.howstuffworks.com/medicine/modern/bionic-eye.htm