What has been a dream for some, science fiction for others, has now become reality for a blind man - he can see again using a bionic eye.
It's exciting to think about what might become available for blind people worldwide. In the U.S., a company named Second Sight has developed a bionic eye that uses a camera and video processor mounted on sunglasses to transmit images wirelessly to a receiver outside the eye. The receiver passes the data to electrodes that sit on the retina, and when the electrodes are stimulated they send messages to the brain via the optic nerve to the brain which can perceive patterns of light and dark.
More than 18 people have been fitted with the bionic eye. The technology looks incredibly promising.