The document outlines 9 ideas for helping blind people see again, including using surgery and transplanting animal eyes, connecting cameras to the eyes or brain via the nerve system, implanting microchips in the retina, using light-sensitive cells and specific light colors, training the ears to recognize shapes from sounds, using a touch screen connected to a camera to feel 3D images, connecting a sighted person's eyes to a blind person's brain, connecting an animal's eyes like a dog's to a blind human's brain, and using sonar like bats to detect surroundings.