Everyone can see the three people lined up, but only those with 20/20 vision and a high IQ can figure out which one is in fact a robot. The three friends look to be off on some kind of adventure.

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 ...

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 ...

Globally, at least 2.2 billion people have a vision impairment or blindness, of whom at least 1 billion have a vision impairment that could have been prevented or has yet to be addressed.

An curved arrow pointing right. Guide dogs from The Seeing Eye are specially bred, trained, and matched with people with blindness and low vision all over the US and Canada. These dogs are ...

Physical changes are a normal byproduct of aging. Gray hairs and less elastic skin that contributes to wrinkles may be among the more notable physical signs of aging, but older ...