Can you see what nobody else can see, are you a tetrachromat?

Most humans have three different cone cells within their eyes. It is these three variations that enables you to perceive colours. A word used to describe this is “trichromatic“. What is truly fascinating is that not everybody has just three variations of cone receptors, some have four and are tetrachromatic. Tetrachromatic vision is something that is found … Read moreCan you see what nobody else can see, are you a tetrachromat?