The human eye has a lens and a retina to send a whole lot of information to the brain. An insect does not have anywhere near the amount of room in its head for such an eye. It uses a compound eye instead. Each little piece has two light receiving sensors. The advantage of the shape is that it is round. The structure makes it stable yet flexible. Recent research indicates that the receptors in the compound eye work in a way similar to the rods and cones in the human eye. Insects can see like people see. This extremely simple structure has suddenly become far more interesting than it was a few years ago.
A simple eye is one single eye. A compound eye is an eye made up of thousands of little eyes, all seeing the same thing.
You can compare the shape of a human eye pupil to that of a cow eye pupil by means of comparing and locating the iris. The iris of a cow is brown where as the iris of a human has multiple colors.
There are many ways to compare the shape of the pupil in a dissected eye with our own pupil. One is to examine general diameter.
Spiders do not have compound eyes like flies. They have several pairs of simple eyes and each pair adapted for a specific task or tasks. Flies have compound eyes with thousands of lens.
Probably dragonflies, with as many as 30000 facets in each of their compound eyes.
I am not 100% sure, but I think I heard something about people changing the shape of the eye. Through surgery to modify the shape of the eye. More spefically, the slit of the eye to give the eye more of an oval shape.
Lens.
Lens
the corena
The lens of the eye also called the crystalline lens.
Sclerasclera
It is a compound eye.
An insects eye is made up with many many small lenses, all joined side by side. Each lens sees only a small part of the scene but taken together they give a complete view of what is around the fly. As the eyes is made up of lots of small bits it is a 'compound' rater than a single structure - hence compound eye.
Compound eye
The compound eye senses light.
From a Compound Eye was created on 2006-01-24.
What compound Adjektive includes eye