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 ...

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 ...

The macula is rich in cone photoreceptors—cells important for perceiving color and seeing finer details. Currently, there are no approved treatments to replace the damaged macula, despite its ...