Others can see with the aid of a visual prosthesis. The Argus II, nicknamed the "bionic eye," holds immense promise for people with a particular kind of blindness, retinitis pigmentosa ...

Although blind people cannot see, they often still possess the brain regions that enable vision. Does this mean that blind people can dream in visual images? In some cases, they can. A 2014 study ...

These three cones work together for us to see the full visible spectrum. But, in colour blindness, one cone cell type doesn’t function properly. This means that people with colour vision ...

Some people see the world differently. Literally. It's a phenomenon called color blindness. It's not just people who can' see color at all. Some people just can't see as many colors as the rest of us.