So the blind may "see".
D001766:Blindness / Q000534:rehabilitation*; D003201:Computers; D004566:Electrodes; D004582:Electronics, Medical; D006801:Humans; D009493:Neurosurgery; D009778:Occipital Lobe; D011845:Radio; D011932:Reading; D012867:Skin; D013690:Television; D014110:Touch; D014794:Visual Fields; D014796:Visual Perception