Animals with blue eyes are a rare occurrence in nature due to being linked to recessive genetics, mutations, and specific ...

Someone with central heterochromia has different colors within the same eye. Complete heterochromia is when they have two different colored eyes ... Some types of heterochromia are common in ...

blue and green. This is thanks to three different types of light-sensitive proteins in our eyes, called opsins. We are not alone: di-, tri- and tetra-chromatic vision is de rigueur in the ...

There are different types of color blindness ... Humans have three types of light-sensing cones in the eyes: red, blue, and green. With color blindness, also known as color vision deficiency ...