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Topic: Anisocoria

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	eMedicine - Anisocoria : Article by Eric R Eggenberger
		Anisocoria may result from any of several pathophysiologies; however, it is useful to keep in mind the basic anatomy when evaluating such patients.
		No general statistics on the prevalence of anisocoria exist, probably because of the diversity of causes; however, anisocoria is a frequently encountered situation in the clinic.
		Imaging often is undertaken in Horner syndrome, and it may be aimed at the medulla, cervical cord, apex of the lung, carotid artery, or cavernous sinus, as indicated by the examination.
	www.emedicine.com /oph/topic160.htm (2546 words)

	Anisocoria definition - Medical Dictionary definitions of popular medical terms
		Anisocoria: Both pupils are usually of equal size.
		If they are not, that is termed anisocoria (from "a-", not + "iso", equal + "kore", pupil = not equal pupils).
		The pupil may appear to open (dilate) and close (constrict) but it is really the iris that is the prime mover; the pupil is merely the absence of iris.
	www.medterms.com /script/main/art.asp?articlekey=7034 (156 words)

	Anisocoria: Approach to the Ophthalmologic Patient: Merck Manual Professional
		Anisocoria is usually physiologic, causes no symptoms, and does not impair normal pupillary light response.
		Physical examination of patients with anisocoria should be performed in lighted and dark rooms.
		If the difference in size is greater in light, the larger pupil is abnormal; causes include Adie's pupil, traumatic damage to the iris, 3rd cranial nerve palsy, and drugs.
	www.merck.com /mmpe/sec09/ch098/ch098c.html (203 words)

	Anisocoria for medical students & primary care physician
		Anisocoria is a cause of concern for any clinician since some of the associated conditions are sight- or even life- threatening.
		Physiologic anisocoria: the majority of patients with anisocoria have a physiologic difference in the size of the two pupils.
		Response to light and near testing is usually intact although anisocoria is greater in dim light.
	www.eyeweb.org /anisocoria.htm (431 words)

	Anisocoria
		The extent of anisocoria is not constant, it can be changed (increased or decreased) in time, in so doing the pupil size can be bigger either at one or the other side.
		True anisocoria in most cases is the symptom of the injury of not only the central nervous system, but also of many internal organs.
		Anisocoria is observed in different diseases of the central nervous system (encephalitis, neurosyphilis, cerebral blood circulation disorders, brain tumors, basal arachnoiditis, cranio-cerebral traumas, multiply injuries in the cervical part of the spinal cord) and in internal diseases (the injuries of lungs apex, calculous cholecystitis, urolithiasis, appendicitis).
	cnri.edu /coursedemo/Pupils_and_Pupillary_Symptoms/Anisocoria.htm (288 words)

	EyeNet Magazine Online \| April 2002 \| Ophthalmic Pearls
		However, anisocoria must be systematically evaluated, as it may signal a history of trauma or the presence of a serious, potentially life-threatening condition, such as an aneurysm or a metastasis.
		Although anisocoria of 2 millimeters or less is often physiologic, an imbalance between the two divisions of the autonomic nervous system is the basis for pathologic anisocoria.
		Anisocoria is considered essential (benign and central anisocoria) if the difference in pupil size is greater than 1 mm but pharmacologic testing reveals no defect.
	www.aao.org /aao/news/eyenet/archive/04_02/perls.html (761 words)

	Anisocoria - Dr Urvashi Sharma - Jabalpur Divisional Ophthalmic Society (Site not responding. Last check: 2007-10-31)
		Anisocoria greater in light suggests the abnormal pupil is the larger pupil.
		Anisocoria greater in dark suggests the abnormal pupil is the smaller pupil.
		Anisocoria that is greater in dim illumination (especially during the first few seconds the room light is dimmed) because of a small pupil that does not dilates as well as the normal, larger pupil.
	www.jdosmp.org /anisocoria.htm (1667 words)

	Constricted pupil may indicate physiologic anisocoria pharmacologic miosis, Adie's pupil, aberrant regeneration of ...
		If the amount of anisocoria is equal in light and dark and there is no other sign of Horner's syndrome (e.g., ptosis, "upside down" ptosis, dilation lag of the pupil), then physiologic anisocoria is likely.
		Pharmacologic testing can confirm that the anisocoria is a benign physiologic anisocoria but is generally not necessary in these cases.
		The patient in the case presentation had pupils that reacted to light, anisocoria that was greater in the dark, the cocaine test indicated a Horner's syndrome, and the hydroxyamphetamine test was positive, indicating a post-ganglionic Horner's syndrome.
	www.encyclopedia.com /doc/1G1-121931264.html (1301 words)

	The Eyes Have It: Other Common Symptoms and Signs (Site not responding. Last check: 2007-10-31)
		Anisocoria, or a difference in the diameter of the pupils in dim illumination, may be physiologic if the difference is less than 1 mm and both pupils react briskly and equally to light.
		A common cause of isolated anisocoria is a viral infection of the ciliary ganglion (Adie's syndrome), an orbital structure that receives the parasympathetic component of the third cranial nerve.
		Horner's syndrome causes anisocoria in which the affected pupil is smaller, but both pupils react briskly to light.
	www.itd.umich.edu /~websvcs/projects/eyes/symptoms/anisocoria.html (279 words)

	MEDLINE Search on Medscape.com
		Isolated anisocoria from an endodermal cyst of the third cranial nerve mimicking an Adie's tonic pupil.
		An anisocoria produces a small relative afferent pupillary defect in the eye with the smaller pupil.
		Anisocoria and middle cerebral artery saccular (berry) aneurysm in a rhesus macaque (Macaca mulatta).
	search.medscape.com /medline-search?queryText=Anisocoria (369 words)

	The Eyes Have It: Other Common Symptoms and Signs
		Anisocoria, or a difference in the diameter of the pupils in dim illumination, may be physiologic if the difference is less than 1 mm and both pupils react briskly and equally to light.
		A common cause of isolated anisocoria is a viral infection of the ciliary ganglion (Adie's syndrome), an orbital structure that receives the parasympathetic component of the third cranial nerve.
		Horner's syndrome causes anisocoria in which the affected pupil is smaller, but both pupils react briskly to light.
	www.kellogg.umich.edu /theeyeshaveit/symptoms/anisocoria.html (310 words)

	MedFriendly.com: Anisocoria (Site not responding. Last check: 2007-10-31)
		Anisocoria is a condition in which the pupils of the eyes are not of equal size.
		Anisocoria is known to result from strokes, depending on where the stroke is located in the brain.
		Anisocoria is often found in strokes of the pons.
	www.medfriendly.com /anisocoria.html (616 words)

	Ophthalmic Hyperguide. Neuro-ophthalmology: The Pupil
		The result of this distribution is that unequal input arising from lesions of one optic nerve or one optic tract does not result in anisocoria, that is, the afferent input, regardless of its source, is equally distributed to both third nerves.
		The anisocoria in these normal patients is either equal in light and dark or is slightly greater in darkness.
		Although the anisocoria, once present, is usually unchanged on future examinations, the degree of anisocoria may vary in some patients, and the size of the pupils may even reverse, with the originally larger pupil becoming the smaller of the two.
	www.ophthalmic.hyperguides.com /tutorials/neuro/pupil/tutorial.asp (7045 words)

	VetMedCenter - Consumer - Article Details (Site not responding. Last check: 2007-10-31)
		Anisocoria describes a condition in which the pupils, the fl centers of the eyes, are unequal in size.
		Anisocoria can be caused by many diseases that affect the eye itself, a malfunction of nerves that control pupil size, or abnormalities in the part of the brain associated with eye function.
		Anisocoria is diagnosed by medical history and physical examination.
	consumer.vetmedcenter.com /Consumer/display.asp?id=8762&dt=p (307 words)

	Anisocoria Ophthalmology
		Anisocoria is a condition characterized by an unequal size of the pupils.
		Anisocoria to a mild degree (generally 0.3 to 0.5 mm) can be found in about 20% of people.
		Several pathologic states may alter the size of the pupil, for example, Horner syndromeor a lesion of the oculomotor nerve.
	www.lumrix.com /medical/ophthalmology/anisocoria.html (106 words)

	C:\FILES\ARTICLES\mf141may94.htm
		We describe several diagnostically confounding effects of transdermal scopolamine, which is being used with increasing frequency to control nausea and vomiting in patients with cancer.
		Because of the anisocoria, a CT scan was obtained.
		Because of the additional abnormalities on neurologic exam, a lumbar puncture was performed, and malignant cells, consistent with a small cell lung cancer, were seen.
	www.brown.edu /Departments/Clinical_Neurosciences/articles/mf14194.html (1649 words)

	Reference.com/Encyclopedia/Scopolamine
		Sometimes side effects of scopolamine can be mistaken for symptoms of cancer because of the nausea and anisocoria associated with brain tumors.
		However, scopolamine induced anisocoria clears up usually within 3 days.
		It is used in ophthalmology to deliberately cause cycloplegia and mydriasis so that certain diagnostic procedures may be performed.
	www.reference.com /browse/wiki/Scopolamine (665 words)

	Anisocoria
		When you are presented with anisocoria as the only presenting sign, the first question to be considered is which is the abnormal pupil; the larger or smaller one.
		The location of the aneurysm causing anisocoria is at the junction of the internal carotid and posterior communicating arteries.
		Another cause of anisocoria may not be found in the pupil but in the angle.
	telemedicine.orbis.org /bins/volume_page.asp?cid=1-13-161-218 (747 words)

	Anisocoria in Cats (Site not responding. Last check: 2007-10-31)
		Anisocoria is an inequality of pupil size, when one pupil is dilated and the other is constricted.
		Nervous system abnormalities, as well as infection, inflammation, cancer or trauma involving the eye can also result in anisocoria.
		It is difficult to treat patients with anisocoria symptomatically, as there can be multiple underlying causes that are treated in very specific ways.
	www.petplace.com /cats/anisocoria-in-cats/page1.aspx (467 words)

	JEFF MANN'S EM GUIDELINES — ANISOCORIA
		Another approach is to only use the algorithms if the patient does not have opthalmologic anisocoria due to structural damage of the eye eg.
		Algorithm number 1: For patients with a normal light reaction and whose anisocoria is greatest in the dark => the smaller pupil in the dark is the abnormal pupil (dilation problem with the smaller pupil)
		Algorithm number 2: For patients with an abnormal light reaction and whose anisocoria is greatest in bright light conditions => the larger pupil is the abnormal pupil (constriction problem with the larger pupil)
	www.jeffmann.net /NeuroGuidemaps/anisocoria.htm (2995 words)

	American Association for Pediatric Ophthalmology and Strabismus (Site not responding. Last check: 2007-10-31)
		Anisocoria that is NOT associated with or due to an underlying medical condition is called physiologic anisocoria.
		Your doctor will ask questions, which may include when the anisocoria was first noted, whether you believe it is more noticeable in bright or dim illumination, and whether or not there was a preceding event that could be related, such as the birth process, neck surgery, or recent trauma.
		One of the most important parts in the evaluation of anisocoria is determining which pupil is abnormal.
	www.aapos.org /displaycommon.cfm?an=1&subarticlenbr=68 (964 words)

	Medical Dictionary: Anisocoria - WrongDiagnosis.com
		Anisocoria: Where the diameters of the two eye pupils are different.
		Anisocoria: Unequal pupil size, which may represent a benign physiologic variant or a manifestation of disease.
		Pathologic anisocoria reflects an abnormality in the musculature of the iris (IRIS DISEASES) or in the parasympathetic or sympathetic pathways that innervate the pupil.
	www.wrongdiagnosis.com /medical/anisocoria.htm (320 words)

	Anisocoria (Site not responding. Last check: 2007-10-31)
		Anisocoria (unequal pupil size) is a common finding in the general populations, presenting in early infancy.
		Almost all cases of anisocoria referred to pediatric ophthalmologists are benign congenital lesions that have no CNS implications.
		Anisocoria is a result of insufficient sympathetic innervation to the iris dilating muscle fibers.
	pediaindia.net /children_disease_dictionary/anisocoria.shtml (237 words)

	anisocoria >> Medical Questions, Weight Loss, Pregnancy, Drugs, Health Insurance
		While I was on work, I have heard my friends talking about woman with anisocoria.
		I am sure you say person with anisocoria at least once in your life and you will knew what that is when I tell you.
		anisocoria is unequal size of the pupils with many benign and life-threatening etiologies.
	www.steadyhealth.com /anisocoria_t56682.html (345 words)

	Ophthalmology & Optometry: physiologic anisocoria vs. Horner's Syndrome
		He took before and after pictures but the results were inconclusive as the suspect pupil (L) dilated but not enough to call the problem just anisocoria for sure.
		He did admit, however, that the pictures were not exact and as they were taken on a struggling infant the angles were slightly different and the pictures were not digital so the measurements were not 100% reliable.
		All physicians suspect that this is a benign anisocoria but since they are not sure we are now scheduled for MRI w/ and w/o contrast of head and soft tissues of neck and chest on Friday Oct. 29.
	en.allexperts.com /q/Ophthalmology-Optometry-979/physiologic-anisocoria-vs-Horner.htm (802 words)

	Arch Ophthalmol -- Abstract: Normal pupil size and anisocoria in newborn infants, January 1990, Roarty and Keltner 108 ...
		The incidence of anisocoria in the newborn period is not well described.
		Additionally, the normal range of infant pupil size is not well defined.
		The incidence of anisocoria was found to be 21%.
	archopht.ama-assn.org /cgi/content/abstract/108/1/94 (118 words)

	Healthlinks.net and Healthlinks.com Index of healthcare categories and subjects
		Anisocoria : Article by Eric R Eggenberger, DO Anisocoria - Anisocoria, or difference in pupil size, is a common condition.
		A variety of potential causes for anisocoria exist, ranging from life threatening to trivial or normal variation.
		This chapter serves as an introduction to anisocoria, while specific causes are discussed in greater detail in Anisocoria, eMedicine...
	www.healthlinks.net /cgi-bin/directory/hyperseek.cgi?search=CAT&Category=Diseases-Disorders%20I%3AEye&Qualifier= (1652 words)

	LILACS - Resultado de la búsqueda <página 1>
		Anisocoria na fase crônica da doenca de chagas / Anisocoria in the chronic phase of Chagas' disease
		Para verificar a freqüência de anisocoria em portadores da fase crônica da doenca de Chagas foi feito estudo prospectivo e duplo cego.
		Observamos a presenca de anisocoria em 10(7,6 por cento) pacientes chagásicos e em 3(2,1 por cento) controles.
	www.bireme.br /cgi-bin/wxislind.exe/iah/online/?IsisScript=iah/iah.xis&nextAction=lnk&base=LILACS&exprSearch=163758&indexSearch=ID&lang=e (171 words)

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