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Ilya Rozenbaum, MD; Robert Ritch, MD, Section Editor

Arch Ophthalmol. 2007;125(11):1557.

	Since this article does not have an abstract, we have provided the first 150 words of the full text and any section headings.

Most spiders are known for excellent mechanoreception, which helps them detect tiny vibrations useful in finding web-entangled prey, but some have remarkable vision rivaling that of humans. Jumping spiders belonging to the genus Portia have the highest optical spatial acuity and most complex behavior. They do not spin webs like other spiders; instead they hunt much like cats by spotting, stalking, and pouncing on their prey. These spiders have 2 large principal eyes in the center of their faces (Figure). These eyes are capable of seeing size, color, and shape at distances of up to a foot. There are also 6 secondary eyes located around the sides and back of the body that provide wide-angle vision used for detecting movement. The principal eye of the spider is a telescopic eye tube that has a corneal lens in the front and . . . [Full Text of this Article]

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