compound eye

A compound eye is a visual organ found in arthropods such as insects and crustaceans. It consists of one to thousands of ommatidia which are tiny independent photoreception units that consist of a cornea, lens, and photoreceptor cells which distinguish brightness and color. The image perceived by the arthropod is a combination of inputs from the numerous ommatidia, which are oriented to point in slightly different directions. Compared with single-aperture eyes, compound eyes have poor image resolution; however, they possess a very large view angle and the ability to detect fast movement and, in some cases, the polarization of light.
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Noun
1. in insects and some crustaceans: composed of many light-sensitive elements each forming a portion of an image
(hypernym) eye, oculus, optic
(part-meronym) ommatidium

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