I Finally Know What an Eyetooth Is

Science is awesome. And creepy. Blind Man Regains Sight After Science Implants A Tooth in His Eye.

in December of 2012, Tibbetts underwent groundbreaking surgery called “Osteo-Odonto-Keratoprosthesis,” which constructs a new eye using a plastic lens and one of Tibbetts’s own teeth. They drill a tiny hole into the tooth, insert the lens into the hole, and then insert the whole tooth into the eye socket. If the retina is still functioning, the patient can see through the tooth-lens window – and the body will never reject it, since the tooth belonged to the patient in the first place.