Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A bionic eye or visual prosthesis is a visual device made to restore functional vision in those suffering from partial or total blindness. A variety of devices have been developed in this intent. Many of these devices have been modelled on the cochlear implant or bionic ear devices a type of neural prosthesis in use by those who have hearing problems since the mid-1980s. However, the ability for people to see again with bionic eyes depends on the circumstances in which they lost their sight...