Skip directly to search Skip directly to A to Z list Skip directly to navigation Skip directly to page options Skip directly to site content


Under a magnification of 1414X, this scanning electron microscopic (SEM) image depicted the compound eye morphology of an insect suspected to be an ant, which was caught in the tangled web of a brown recluse spider, Loxosceles reclusa. Note the repeating hexagonal pattern on the eye’s surface. The compound eye is actually a single large eye, made up of many repeating units known as ommatidia, each composed of a photoreceptor cell, support cell, and pigment cells. Though each of these visual mechanisms functions as a separate organ, together they provide the organism with a compound picture of its environment. Referred to as the flicker effect, the compound eye is made very sensitive to movement, with each ommatidium turning on and off, as objects pass across its field of view. The bilateral anatomical placement of the insect's eyes provides the organism with a very wide range of visual sensitivity.
High Resolution: Click here for hi-resolution image (5.49 MB)
Content Providers(s):CDC/ Janice Haney Carr
Creation Date:2007
Photo Credit:Janice Haney Carr
CDC Organization
Skip Navigation Links.

Skip Navigation Links.
Copyright Restrictions:None - This image is in the public domain and thus free of any copyright restrictions. As a matter of courtesy we request that the content provider be credited and notified in any public or private usage of this image.