Compound eye - Wikipedia
A compound eye is a visual organ found in arthropods such as insects and crustaceans. It may consist of thousands of ommatidia, [1] which are tiny independent photoreception units that consist of a cornea, lens, and photoreceptor cells which distinguish brightness and color.
Arthropod eye - Wikipedia
Arthropod eye. Insects and all mandibulates have compound eyes, with the exception of some myriapods that have stemmata. Although arachnids (like this spider) do not have compound eyes, xiphosurans and many other extinct chelicerates do. Apposition eyes are the most common form of eye, and are presumably the ancestral form of compound eye.
Understanding how evolution shaped the insect visual system
Feb 24, 2021 · In it, the researchers describe a novel method for isolating light-sensitive proteins found in the eyes of insects — called opsins — and detailing their molecular history, structure, and function to determine what colors an insect can see.
Insect Vision - Entomology Animated
Many day-active insects have a kind of compound eye called an apposition (or photopic) eye. In the first of a four-part series, we peek into the peepers of a carpenter ant ( Camponotus pennsylvanicus ) to see how its apposition eyes collect light.
Through the Compound Eye | Ask an Entomologist
Feb 25, 2015 · The compound eye is made up of many “ommatidia”, the basic units that the insect eye is comprised of. Each one is kind of like an eyeball in the fact that it has a lens which focuses light and has pigments (opsins) for detecting color.
Photoreception - Compound Eyes, Light Sensitivity, Optics ...
Although compound eyes are most often associated with the arthropods, especially insects and crustaceans, compound eyes evolved independently in two other phyla, the mollusks and the annelids. In the mollusk phylum, clams of the genera Arca and Barbatia have numerous tiny compound eyes, each with up to a hundred ommatidia, situated around their ...
Simple eye in invertebrates - Wikipedia
A simple eye or ocellus (sometimes called a pigment pit[1][2]) is a form of eye or an optical arrangement which has a single lens without the sort of elaborate retina that occurs in most vertebrates. These eyes are called "simple" to distinguish them from "compound eyes", which have multiple lenses. They are not necessarily simple in the sense ...
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