Plate 16.302 Eye
Ronald A. Bergman, Ph.D., Adel K. Afifi, M.D., Paul M. Heidger,
Peer Review Status: Externally Peer Reviewed
Rhesus monkey, 10% formalin, H. & E., 50 x.
Ciliary body: A ring of muscle and vascular tissue, part of the vascular and pigmented tunic of the eye, which includes, in addition, the choroid and iris. The ciliary body is attached to the lens by the suspensory ligament. Contraction of muscle of the ciliary body results in lens accommodation.
Ciliary processes: Ridges of the ciliary body as it approaches the iris. Run in a meridional plane. Provide an anchor for the suspensory ligaments of the lens. Produce aqueous humor.
Suspensory ligament: Made up of delicate collagenous fibers that stretch between the lens capsule and ciliary processes from which the lens is suspended. The suspensory ligament is under tension when the eye is at rest and relaxes when the lens accommodates, as in near vision.
Lens: Transparent biconvex disc enclosed in a homogeneous elastic capsule and located behind the iris. Made up of concentric layers of lens fibers and a cement substance. Changes in configuration of the lens are important in accommodation. The lens, cornea, and the vitreous are the important refractive media of the eye.
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