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ommatidium |
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ommatidium One of the visual elements of the compound eye of arthropods. It is hexagonal in shape and about ten times longer than its diameter. It consists of a corneal facet below which is a crystalline cone which collects light and a sensory area called the rhabdom, all of it being enclosed in a dark pigment. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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Ommatidia develop a greenish-yellow fringe, producing a "halo" effect around eye. 318), it has been obvious for many years that such structures need not be exceptionally small and need not be extremely like ommatidia to behave like ommatidia. The resulting columns of hardened and optically altered material inside the hemisphere act as ommatidia because they guide light along a precise line from each lens, Lee says. |
ommatidia |
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