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Organisms evolved light sensitive cells many millions of years ago. These primitive light sensors would help it to hide from predators under a rock or actively move towards food sources using sunlight to grow. Many versions of the eye have evolved, from the compound eye found in flies to the multiple eyes in scallops and Spiders.
The human eye is simply one one of the best to have evolved although it is not the best by far. We see a full colour image because we have two type of cells in the retina.Rod cells give us the perception of light level from back to grey. Cone cells sort the different frequencies,or colours, in light and convert this into electrical signals for the brain to interpret. The absence of these cells tells us which animals can see in colour.
Interesting experiment
The brain receives images upside down but if we wear goggles that turn the world upside down our brain will correct it after about 2 weeks.Taking the goggles off and it takes a similar time to correct itself.
What else can I help you with?
What is the origin of Keep an eye out?
It is just an idiom and has no history.
What is the origin of the idiom keep an eye on him?
About 400 BC in England , a
What is the meaning of the name ehtesham?
Ehtesham means EYE ........Arabic origin.
Who sang Origin theme song?
Eye of the Tiger, was done by Survivor.
What is the origin of the idiom eagle eye?
it is an old military term for good sight
What is the origin of the idiom keep an eye on you?
spying or looking someone all the time
Does the eye on the pyramid mean that you whorship the devil?
Does it mean who worships the devil? But no, it has nothing to do with the devil. It is the all seeing eye of god, the Eye of Providence, whose origin goes back to to the Udjat, or the Eye of Horus.
What muscle has is origin at the occipital bone and insertion on the skin and muscle around the eye?
Epicranius
What is the origin of saying 'beauty is in the eye of the beholder'?
The saying "beauty is in the eye of the beholder" basically means that what or who is considered beautiful can be different or vary from person to person.
What is the meaning of the proverb 'An eye for an eye a tooth for a tooth'?
Its Biblical in origin. If someone hurts you, by poking you in the eye , for example , then you have the right to hurt them back, by poking them in the eye. You can't hurt them more greatly than they have hurt you. Does this make sense?
What is the origin of here's spit in your eye?
it means to have someone disrespect you or take your kindness and shove it in your face
What is the origin of the term anophthalmos?
Anopthalmos is a straight Greek construction; an = 'not, opthalmos = 'eye' It indicates complete absence of eye tissue inside the orbit, and is extrordinarily rare.
