Ciliary processes

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Ciliary processes
Interior of anterior half of bulb of eye. (Ciliary process visible at upper right.)
Diagram of the blood vessels of the eye, as seen in a horizontal section. (Proc. ciliar. visible at center top.)
Latin	processus ciliares
Gray's	subject #225 1010
Artery	short posterior ciliary arteries
Dorlands/Elsevier	p_34/12667359

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The ciliary processes are formed by the inward folding of the various layers of the choroid, i.e., the choroid proper and the lamina basalis, and are received between corresponding foldings of the suspensory ligament of the lens.

Anatomy

They are arranged in a circle, and form a sort of frill behind the iris, around the margin of the lens. jhg

They vary from sixty to eighty in number, lie side by side, and may be divided into large and small; the former are about 2.5 mm. in length, and the latter, consisting of about one-third of the entire number, are situated in spaces between them, but without regular arrangement.

They are attached by their periphery to three or four of the ridges of the orbiculus ciliaris, and are continuous with the layers of the choroid: their opposite extremities are free and rounded, and are directed toward the posterior chamber of the eyeball and circumference of the lens.

In front, they are continuous with the periphery of the iris.

Their posterior surfaces are connected with the suspensory ligament of the lens.

Function

The ciliary processes produce aqueous humor.

External links

• Histology at une.edu
• Histology at BU 08011loa
• http://www.lab.anhb.uwa.edu.au/mb140/CorePages/eye/eye.htm#iris

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.

v • d • e Sensory system - Visual system - Eye
Fibrous tunic (outer)	Conjunctiva • Sclera  • Schlemm's canal • Trabecular meshwork • Limbus Cornea (Epithelium, Bowman's, Stroma, Descemet's, Endothelium)
Uvea (middle)	Choroid (Ciliary processes, Choriocapillaris, Bruch's membrane) • Iris (Stroma)  • Pupil • Ciliary body
Retina (inner)	Macula • Fovea • Optic disc
Anterior segment	Anterior chamber • Aqueous humour • Posterior chamber • Lens
Posterior segment	Vitreous humour • Zonule of Zinn
Intraocular muscles	parasympathetic (Ciliary muscle, Iris sphincter muscle) • sympathetic (Iris dilator muscle)

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Acknowledgement and Attribution Regarding Sources of Content

Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .