How do insects see?

With two large eyes that can take up most of an insect’s head. Insect eyes are called compound eyes. Each compound eye is made up of many tiny lenses. A housefly’s eye, for example, has 5,000 lenses. But dragonflies take the prize, with 30,000 lenses in each eye! Insects can spot anything that is moving. Yet most don’t see very well. The world looks blurry to them. And since insects don’t have eyelids, their eyes are always open.