Another kind of compound eye, found in Strepsiptera, employs a series of simple Eyes.

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Another kind of compound eye, found in Strepsiptera, employs a series of simple eyes - eyes having one opening that provides light for an entire image-forming retina. Several of these eyelets together form the strepsipteran compound eye, which is akin to the 'schizochroal' compound eye some trilobites had. Because each eyelet is a simple eye, it produces an inverted image; those images are flipped over and combined in the brain to form one unified image. Because the aperture of an eyelet is larger than the facets of a compound eye, this arrangement allows vision under significantly lower light levels.