An unusual superolateral origin of ophthalmic artery: an anatomic case report

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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“…3). At any rate, this is a very rare event that has been reported only occasionally [18, 19, 46, 52]. …”

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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“…The OphA is one of the major branches of the ICA, usually originating from the superomedial or the anteromedial part of the ICA within the intradural space. 6 Other rare origins, such as the middle meningeal artery, 7 the basilar artery, 8 the ACA 9 and superolateral origin, 10 have also been described. For this patient, the OphA is the direct continuation of the ICA.…”

Section: Discussionmentioning

confidence: 99%

An unusual variation of carotid-vertebrobasilar arteries: An anatomical case report

Shikui

2016

Neuroradiol J

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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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An unusual superolateral origin of ophthalmic artery: an anatomic case report

Abstract: To the best of our knowledge, this is a very rare operative case of both superolateral origin and initial course of OphA.

Cited by 6 publications

References 16 publications

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

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

An unusual variation of carotid-vertebrobasilar arteries: An anatomical case report

Different ophthalmic artery origins: Embryology and clinical significance

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