Losing your sight has to be one of the most difficult things you could face—but getting it back has to be one of the most beautiful experiences you could imagine.
Ian Tibbetts got his sight back when he got one of this teeth implanted in his eye. The procedure is called osteo-odonto-keratoprosthesis, and requires a tooth being removed from the patient and being placed under the eye socket to allow it to grow blood vessels. About four months later, the vessels and tissue are removed and implanted into the socket, restoring sight. Check out the clip above from the BBC doc The Day I Got My Sight Back.