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What is the difference between compound ...

What is the difference between compound eyes and simple eyes?

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In simple eyes' a single lens collects and focuses light onto the retina of the eye.
2. In case of compound eyes, multiple lenses are involved. Each of them focuses the light onto a small number of retinula cells.
3. All the cells must coordinate to help the animal visualise the object.
4. The vision is thus decribed as mosaic vision.
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