Visuals differ : The Nature of God's Design

Visuals differ : The Nature of God's Design : 

Humans have one lens in each eye, and our eyes are trichromatic — we have three types of colour sensing cells, or cones, which allows us to distinguish combinations of a million or so colours. But even within humans, there is a twofold or threefold physical difference from one person to another in every aspect of our visual system(eg: the size of the optic nerve, lateral geniculate nucleus and primary visual cortex, etc)....

Dramatic Difference

However, colour vision and eyesight vary even more dramatically among different species, many of which are monochromatic, such as seals, sea lions, and owl monkeys.

If a species is a rod monochromat, then for it, the world is free of all colours other than shades of grey.

If a species is a cone monochromat (with only one type of cone), then it can see about 100 shades of a single colour or its combinations.

Cats are dichromatic, which means they can see only about 10,000 colours.There are gender differences in animals — among New World monkeys, males are dichromatic but many females are trichromatic, like us.

Honeybees are trichromatic but they cannot see red; and they can see ultraviolet frequencies.

Om Namah Shivay