Israeli researchers are testing a holographic system designed to artificially stimulate cells in the eye, hoping to create a bionic system for restoring vision.
The typical prosthetic limb is a very limited device that usually looks very little like the arm, hand or leg it is meant to replace.
An Australian woman has been the first recipient of a prototype bionic eye with 24 electrodes, which has succeeded in restoring some of her vision.
Oxford University scientists are protptyping glasses that could help people with severely limited vision see again.
A New Zealand company has developed the world's first robotic legs, enabling a man who'd been in a wheelchair for five years to walk again.
Oscar the Cat - who had his back feet severed by a tractor - is walking again with a new pair of bionic limbs.