Anterior ciliary arteries

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Topic: Anterior ciliary arteries

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	Ophthalm-AUS - Oben's Ophthalmology Site
		Sources: Posterior long ciliary arteries, anterior ciliary arteries (LPCA); divide close to posterior edge of ciliary body into 2 or more divisions,passing forward to anastomose with branches of anterior ciliary arteries to form major arterial circle of iris,which lies just behind root of iris, in front of the radial portion of ciliary muscle.
		Inner circular portion (Muller's muscle) which occupies the inner anterior portion of ciliary body.
		Ciliary body is divided into segmental units by radially arranged hyperpigmented ridges called striae ciliaris.
	home.iprimus.com.au /oben/ciliary.htm (1265 words)

	eMedicine - Optic Neuropathy, Anterior Ischemic : Article by Brian R Younge, MD
		The posterior ciliary arteries feed the optic nerve head, and, despite variable results in animal primate models with ligation of the posterior ciliary arteries, their susceptibility to atherosclerosis and arteriosclerosis in a widespread manner seems to be the underlying cause.
		Anterior ischemic optic neuropathy (AION) is the most common cause of acute optic neuropathy in older age groups.
		Patients with arteritic AION often have symptoms other than visual loss, such as malaise, headache, scalp tenderness and tender temporal arteries, jaw pain on mastication (jaw claudication), generalized muscle aches, and swelling.
	www.emedicine.com /oph/topic161.htm (3873 words)

	VI. The Arteries. 3a. 4. The Internal Carotid Artery. Gray, Henry. 1918. Anatomy of the Human Body.
		The anterior ciliary arteries are derived from the muscular branches; they run to the front of the eyeball in company with the tendons of the Recti, form a vascular zone beneath the conjunctiva, and then pierce the sclera a short distance from the cornea and end in the circulus arteriosus major.
		The lacrimal artery give off one or two zygomatic branches, one of which passes through the zygomatico-temporal foramen, to reach the temporal fossa, and anastomoses with the deep temporal arteries; another appears on the cheek through the zygomatico-facial foramen, and anastomoses with the transverse facial.
		It at first ascends toward the posterior clinoid process, then passes forward by the side of the body of the sphenoid bone, and again curves upward on the medial side of the anterior clinoid process, and perforates the dura mater forming the roof of the sinus.
	www.bartleby.com /107/146.html (3873 words)

	Handbook of Ocular Disease Management - ANTERIOR ISCHEMIC OPTIC NEUROPATHY
		Anterior ischemic optic neuropathy is caused by infarction of the short posterior ciliary arteries supplying the anterior optic nerve.
		In the case of arteritic AION, these vessels, as well as the ophthalmic and central retinal arteries, are compromised by an idiopathic infiltration of the vessels walls by inflammatory macrophages, lymphocytes, and multinucleate giant cells.
		The patient with arteritic AION is, on average, 75 years old while the patient with non-arteritic AION is, on average age, 62 years old.
	www.revoptom.com /handbook/sect6a.htm (682 words)

	eMedicine - Optic Neuropathy, Anterior Ischemic : Article by Brian R Younge, MD
		The posterior ciliary arteries feed the optic nerve head, and, despite variable results in animal primate models with ligation of the posterior ciliary arteries, their susceptibility to atherosclerosis and arteriosclerosis in a widespread manner seems to be the underlying cause.
		The Ischemic Optic Neuropathy Decompression Trial Research Group: Optic nerve decompression surgery for nonarteritic anterior ischemic optic neuropathy (NAION) is not effective and may be harmful.
		It is characterized by visual loss associated with optic disc swelling of a pallid nature, sometimes with flame hemorrhages on the swollen disc or nearby neuroretinal layer, and sometimes with nearby cotton-wool exudates.
	www.emedicine.com /oph/topic161.htm (3873 words)

	Gray's Anatomy - The Internal Carotid Artery - Yahoo! Reference
		The anterior ciliary arteries are derived from the muscular branches; they run to the front of the eyeball in company with the tendons of the Recti, form a vascular zone beneath the conjunctiva, and then pierce the sclera a short distance from the cornea and end in the circulus arteriosus major.
		The lacrimal artery give off one or two zygomatic branches, one of which passes through the zygomatico-temporal foramen, to reach the temporal fossa, and anastomoses with the deep temporal arteries; another appears on the cheek through the zygomatico-facial foramen, and anastomoses with the transverse facial.
		It passes forward and medialward across the anterior perforated substance, above the optic nerve, to the commencement of the longitudinal fissure.
	messenger.yahooligans.com /reference/gray/146.html (3873 words)

	eMedicine - Retinal Artery Occlusion : Article by Enoch Huang, MD, MPH
		The ciliary arteries supply the choroid and the anterior portion of the globe via the rectus muscles (each rectus muscle has 2 ciliary arteries except the lateral rectus, which has 1).
		Patients with visualized retinal artery emboli, whether or not obstruction is present, have 56% mortality over 9 years, compared to 27% for an age-matched population without retinal artery emboli.
		Thrombolytics are introduced via the proximal ophthalmic artery, delivering increased concentrations directly to the retinal artery and minimizing systemic complications.
	www.emedicine.com /emerg/topic777.htm (3873 words)

	THE SYMPATHETIC - Online Information article about THE SYMPATHETIC
		branch accompanying the internal carotid artery passes to the carotid and cavernous plexuses, and through these communicates with the sphenomaxillary, otic and ciliary ganglia, while the branch to the external carotid communicates with the submaxillary ganglion.
		axis; in it are situated the semilunar, aortico-renal and superior mesenteric ganglia, and from it are prolonged subsidiary plexuses along the main arteries, so that diaphragmatic, suprarenal, renal, spermatic, coeliac, superior mesenteric, aortic and Inferior mesenteric plexuses, are recognized.
		The right and left coronary plexuses accompany the coronary arteries; the former communicates with both the cardiac plexuses, the latter only with the deep cardiac plexus.
	encyclopedia.jrank.org /TAV_THE/THE_SYMPATHETIC.html (1713 words)

	Role of the endothelium in modulating functional responses of isolated bovine anterior ciliary arteries to vasoconstrictor agonists -- Buckley et al. 82 (7): 826 -- British Journal of Ophthalmology
		Role of the endothelium in modulating functional responses of isolated bovine anterior ciliary arteries to vasoconstrictor agonists -- Buckley et al.
		82 (7): 826 -- British Journal of Ophthalmology
	www.bjophthalmol.com /cgi/content/full/82/7/826 (1713 words)

	The Choroid and Sclera
		Blood vessels first appear in the choroid during the 15th week of development, and arteries and veins can be recognized by the 22nd week.
		Part of the choroid develops into the cores of the ciliary processes.
		The mesenchyme that surrounds the optic cup, excluding the anterior aspect where it forms the cornea, gives rise to the choroid and sclera.
	www.vision.ca /eye/choroid_sclera.html (161 words)

	IX. Neurology. 7a. The Cephalic Portion of the Sympathetic System. Gray, Henry. 1918. Anatomy of the Human Body.
		The terminal filaments from the internal carotid and cavernous plexuses are prolonged as plexuses around the anterior and middle cerebral arteries and the ophthalmic artery; along the former vessels, they may be traced to the pia mater; along the latter, into the orbit, where they accompany each of the branches of the vessel.
		It communicates with the oculomotor, the trochlear, the ophthalmic and the abducent nerves, and with the ciliary ganglion, and distributes filaments to the wall of the internal carotid artery.
		It ascends by the side of the internal carotid artery, and, entering the carotid canal in the temporal bone, divides into two branches, which lie one on the lateral and the other on the medial side of that vessel.
	www.bartleby.com /107/215.html (161 words)

	eMedicine - Optic Neuropathy, Anterior Ischemic : Article by Brian R Younge, MD
		Pathophysiology: AION is thought to be an ischemic process affecting the posterior circulation of the globe, principally vessels (ie, short posterior ciliary arteries) supplying the optic nerve at its exit from the eye.
		AION is a very frustrating disease, to both patients and physicians, because little can be performed to treat it.
		Rare cases of AION occur before 40 years, and the differentiation from optic neuritis associated with demyelinating disease is important in this crossover age group.
	www.emedicine.com /oph/topic161.htm (3873 words)

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In the News (Sat 11 Oct 08)