The picture above illustrates how a chip implant behind a blind person’s retina could provide vision. Developed by researchers at University Eye Clinic in Tübingen, Germany in association with a firm called Retina Implant, the method when tested empowered the subjects involved to see letters, detect a clock face, move around a room and even differentiate between various shades of gray.
This technology developed for 12 years, differs from other implants in the sense that the person here can visualize objects with his own eyes as opposed to any external camera support.The implant which is externally powered is connected to a battery via a cable that emerges from the skin at the back of the ear.
The picture below shows how a Finnish man who is blind was able to recognize his name. Although his name spelled Miikka Terho, the man was shown only the letters M,I,K,A on purpose to see whether he could identify the error.