A bionic eye is giving a sightless man glimpses of light, it has been reported.
The man, identified only as Ron, went blind 30 years ago due to retinitis pigmentosa, which damaged his retinas.
But after undergoing surgery at Moorfield"s eye hospital in London, Ron says he is beginning to see light.
He told the BBC he could differentiate between white, black and grey socks and declared: "Suddenly to be able to see light again is truly wonderful."
His bionic eye, the creation of American firm Second Sight, uses sunglasses with a camera and video processor.
Images are passed to a receiver which subsequently moves them to electrodes on his retina, which can then make use of his optic nerve.
Lyndon da Cruz, who performed the surgery, told the BBC that more testing is needed but said he was "very encouraged".
by Adrian Galbreth