One of my biggest fears about aging is loss of vision. This research headline fills me with hope.
There are some forms of blindness where the optic nerve that carries the visual input remains intact. Australian scientists created an interface between the healthy optic nerve and a video camera attached to a pair of glasses to send visual signals into the brain. The goal is to provide enough "vision" that people would not need seeing eye dogs except as companions. So far one patient has seen light for the first time in years. These same researchers are working on developing electrodes to implant directly into the visual cortex of the brain to help those people with degeneration of the optic nerve. I can envision a world where blindness is history.