Dr. Mark Lindsay was 5 years old when he first learned that tree trunks were brown. "Up until that point, I believed leaves and trunks were all green. Just lighter and darker shades," Mark said. Mark ...

Our ability to see with color vision depends on the presence and function of light-sensing pigments in the cones of our eyes. Color blindness, or color vision deficiency, happens when one or more of ...

There are three main types of color vision deficiency: red-green, blue-yellow, and complete. Color blindness, or color vision deficiency, affects the way you perceive color and can make it hard to ...

Color blindness is most commonly an inherited condition that limits people's ability to perceive differences in color, or, more rarely, see certain colors at all. In simplest terms, those of us ...

This story is part of a series on the current progression in Regenerative Medicine. This piece is part of a series dedicated to the eye and improvements in restoring vision. This marks the first story ...

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.