Anomalous Origin of the Ophthalmic Artery in a Patient With Amaurosis Fugax

Weinberg, Peter E.; Patronas, Nicholas J.; Kim, Kwang S.; Melen, Onur

doi:10.1001/archneur.1981.00510050081016

Cited by 22 publications

(10 citation statements)

References 7 publications

(1 reference statement)

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“…Therefore, these references were included to substantiate the number of different OA variations encountered. Thus, in the event of maldevelopment or atrophy of the proximal segment of the OA, the supraorbital branch of the MMA supplies the orbit (Weinberg et al, 1981). Today, more advantageous magnetic resonance (MR) imaging is available.…”

Section: Methodsmentioning

confidence: 99%

“…Although the OA may arise from the anteromedial (53.6%) or superomedial part (37.5%) of the ICA within the intradural space (Parloto et al, 2011), a very rare case of superolateral origin were recently reported (N'da et al, 2014). The meningo-ophthalmic artery (M-OA) is a stem artery with maxillary artery (MA) origin from the external carotid artery (ECA) (Hiura, 1980;Marano et al, 1981;Weinberg et al, 1981;Hamada et al, 1991;Shima et al, 1995;Watanabe et al, 1996;Liu and Rhoton, 2001;Hayashi et al, 2007;Cohen et al, 2012;Tsutsumi et al, 2012). In a Japanese study, Uchino et al (2013a) reported among 1,652 OAs a 1.45% incidence (26 cases) of OAs variants that arose from the middle meningeal artery (MMA) and entered the orbit via the SOF.…”

Section: Ophthalmic Artery Variantsmentioning

confidence: 99%

“…Double OA origin. OA origins at the bifurcation of the ICA (Hamada et al, 1991) or from the terminal branches of the ICA, namely the A1 segment of the ACA (Hassler et al, 1989;Islak et al, 1994;Li et al, 2011;Hannequin et al, 2013), and the M1 segment of the MCA (Weinberg et al, 1981) are reported. Double origins from the ICA may be from the C3 (lacerum) segment and C4 (carotid siphon) segment that correspond to nonmigration of the PVOA and migration of the PDOA (Lasjaunas, 1981;Ogawa, 1990), respectively, or from the carotid siphon corresponding to normal migration of the PVOA (supracavernous ICA siphon) and the presence of an ILT (proximal remnant of the PDOA from horizontal part of carotid siphon) (Padget, 1948;Kam et al, 2003).…”

Section: Ophthalmic Artery Variantsmentioning

confidence: 99%

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Different ophthalmic artery origins: Embryology and clinical significance

Louw

2014

Clinical Anatomy

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This retrospective study gives a summary of ophthalmic artery (OA) variations to serve as guidelines for surgical interventionists and trainees. Pubmed and Medline searches were conducted. The OA usually arises intradurally (superomedial, anteromedial, or rarely superolateral) from the internal carotid artery (ICA). Rare extradural origin (primitive dorsal OA) (PDOA) remnant and extremely rare interdural origin (primitive ventral OA) (PVOA) remnant are of significance when sectioning the dural ring. Rarely, a persistent PDOA with ICA origin, or a PDOA remnant with inferolateral trunk origin, enters the orbit via the superior orbital fissure (SOF) for sole or partial orbital supply. Extremely rare, the PDOA and PVOA persist and form double OAs that arise from the ICA and run via the SOF and optic foramen. Occasionally, the OA arises from the middle meningeal artery (MMA), when both the PDOA and VDOA regress and enter the orbit via the SOF. Sole orbital supply via the external carotid artery (ECA), i.e. meningo-ophthalmic artery and/or MMA branches, or dual OAs (ECA and ICA origins) may occur. Other rare OA origins include anterior or posterior communicating artery; anterior or middle cerebral artery; basilar artery; posterior inferior cerebellar artery; and the carotid bifurcation. Primitive arteries (persistent or remnant), and/or abnormal anastomoses play pivotal roles in manifestations of OA variations. Of clinical importance are orbital collateral routes and dangerous extracranial-intracranial anastomoses. Awareness of OA origins and collateral routes is imperative for transarterial embolizations or infusion chemotherapy in the ECA territory to prevent visual complications.

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Section: Methodsmentioning

confidence: 99%

Section: Ophthalmic Artery Variantsmentioning

confidence: 99%

Section: Ophthalmic Artery Variantsmentioning

confidence: 99%

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Different ophthalmic artery origins: Embryology and clinical significance

Louw

2014

Clinical Anatomy

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“…2) [36, 45]. The stemming from the MMA is certainly the most frequently reported aberrant origin of the OA [11, 23, 39, 40, 65, 66]. In large series of dissections or radiological surveys, the OA MMA has been reported in as much as 1.2–3.3% of orbits [24, 29, 64].…”

Section: Variations Of the Oa Originmentioning

confidence: 99%

An update on the variations of the orbital blood supply and hemodynamic

2016

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PurposeSeveral variations of the arterial blood supply of the orbit have been reported over the years. This review is aimed to provide an update focusing on three important issues: (a) variations of the ophthalmic artery origin; (b) contribution of the external carotid artery to the orbital blood supply; (c) orbital hemodynamic.MethodsA PubMed and Google search was carried out with the following keywords: ophthalmic artery origin, ophthalmic artery anastomoses and ophthalmic artery anatomy.ResultsThe site of origin of the ophthalmic artery displays a limited number of variations. However they are important as they are also associated with course variations. Anastomoses between the ophthalmic artery and the external carotid artery are numerous and many of them can acquire clinical relevance. Records on their anatomic frequency are limited. Orbital hemodynamic variations are a poorly studied subject. Recent investigations in children have unveiled unexpected variability and instability in the way the blood flows through the orbit.ConclusionsThe orbit shows several possible arterial variations. Some of them have a profound influence on its hemodynamic at least in children. More studies are required to ascertain if the hemodynamic variability observed in children can be pinpointed also in adults.

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“…[1234] Regarding OAs with ECA origin, three studies over a period of four decades reported on meningo-ophthalmic artery (M-OA) anomalies. [567] M-OA anomalies are marked by the anomalous origin of the OA from the stem of the middle meningeal artery (MMA), with or without MMA branch variations. Those of relevance to this paper are dual OAs with ECA and ICA origins, and identification of the source of the central retinal artery (CRA).…”

Section: Introductionmentioning

confidence: 99%

Imaging of Dual Ophthalmic Arteries: Identification of the Central Retinal Artery

Louw

Steyl

Loggenberg

2014

Journal of Clinical Imaging Science

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Identification of the origin of the central retinal artery (CRA) is imperative in tailoring angiographic studies to resolve a given clinical problem. A case with dual ophthalmic arteries (OAs), characterized by different origins and distinct branching patterns, is documented for training purposes. Pre-clinical diagnosis of a 9-year-old child who presented with a sharp wire in the left-side eyeball was primarily corneal laceration. For imaging, a selected six-vessel angiographic study with the transfemoral approach was performed. Embolization was not required and the wire could be successfully removed. Right-side OA anatomy was normal, while left-side dual OAs with external carotid artery (ECA) and internal carotid artery (ICA) origins were seen. The case presented with a left-side meningo-ophthalmic artery (M-OA) anomaly via the ECA, marked by a middle meningeal artery (MMA) (origin: Maxillary artery; course: Through foramen spinosum) with normal branches (i.e. anterior and posterior branches), and an OA variant (course: Through superior orbital fissure) with a distinct orbital branching pattern. A smaller OA (origin: ICA; course: Through optic foramen) with a distinct ocular branching pattern presented with the central retinal artery (CRA). The presence of the dual OAs and the M-OA anomaly can be explained by disturbed evolutionary changes of the primitive OA and stapedial artery during development. The surgical interventionist must be aware of dual OAs and M-OA anomalies with branching pattern variations on retinal supply, because of dangerous extracranial–intracranial anastomotic connections. It is of clinical significance that the origin of the CRA from the ICA or ECA must be determined to avoid complications to the vision.

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Anomalous Origin of the Ophthalmic Artery in a Patient With Amaurosis Fugax

Cited by 22 publications

References 7 publications

Different ophthalmic artery origins: Embryology and clinical significance

Different ophthalmic artery origins: Embryology and clinical significance

An update on the variations of the orbital blood supply and hemodynamic

Imaging of Dual Ophthalmic Arteries: Identification of the Central Retinal Artery

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