The images below each show a scene as viewed by a human. Drag the slider to the left to see how an animal would see the same scene. Whereas human eyes contain three types of colour-detecting cells, ...

Typically, our colour vision is trichromatic, meaning we have three types of cone cells in our eyes, blue, green and red, that respond to short, medium and long wavelengths of light. Each cone ...

Most people are trichromatic, meaning the three types of cone cells in their eyes are sensitive to three wavelengths of light – red, blue, and green. The combination of signals from these three ...

There are three different types of cone cells which produce colour vision. The amount of light entering the eye is controlled by a reflex action. The size of the pupil changes in response to ...

We can see about a million different colours Most humans are trichromats, which means our eyes have three different types of cone cells: red, green or blue, able to detect about 100 shades each.