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Eyes like yours: three-colour vision

11 animals on this site have this kind of eyes, including the rhesus macaque, the chimpanzee and the crab-eating macaque. The rhesus macaque: sees colours a lot like you do. Pick one and try its eyes on your photo.

Red tulips under a blue sky, as you see them.

Red tulips under a blue sky as a rhesus macaque sees them (simulation): colours remapped to its 3 receptor classes.

Try it on your photo

A simulation made from published eye studies. Not what the animal feels.

The same photo through their eyes

The same tulips as a human sees them.

HumanEyes like yours: three-colour vision

The same tulips as a rhesus macaque sees them.

Rhesus macaquecolours a lot like yours

Play today's Guess the Eye: can you tell these eyes apart?

Animals with these eyes

The science behind it