Implanted chip 'allows blind people to detect objects'
A man with an inherited form of blindness has been able to identify letters and a clock face using a pioneering implant, researchers say. Miikka Terho, 46, from Finland, was fitted with an experimental chip behind his retina in Germany. Success was also reported in other patients. The chip allows a patient to detect objects with their eyes, unlike a rival approach that uses an external camera.