What is an eye with many lenses called?

An eye with many lenses is called a compound eye. This type of eye is typically found in arthropods, such as insects and crustaceans. Compound eyes are made up of numerous small units called ommatidia, each of which contains its own lens, allowing for a wide field of view and the ability to detect motion effectively. They provide a different visual experience compared to single-lens eyes, like those found in vertebrates.