Microsurgical anatomy of the human ophthalmic artery: a mesoscopic study of its origin, course and collateral branches

Jiménez‐Castellanos, J.; Carmona, Asunción; Castellanos, Luis Carlos Maroto; Catalina-Herrera, C.J.

doi:10.1007/bf01627574

Cited by 26 publications

(23 citation statements)

References 13 publications

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“…When the frequency of this variant was ascertained, it ranged between 3.3 and 8% of cases [25, 29, 56]. However, large surveys conducted on more than 1600 OAs by angiography or MR angiography suggest a much lower prevalence that ranges between 0.42 and 1.76% of orbits [27, 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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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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“…A summary of anastomoses between branches of the ICA and the ECA (Hayreh and Dass, 1962b;Jimenez-Castellanos et al, 1995) is as follows: between MMA and lacrimal artery; between angular branch of facial artery and dorsal nasal branch of the OA; between infra-orbital branch of the maxillary artery (MA) and muscular branches of the OA; and between the anterior temporal artery and the lacrimal and muscular branches of the OA. Weinberg et al (1981) considered all anastomotic branches as potential contributors to the origin of abnormal OAs.…”

Section: Anastomotic Branches Between the Ica And The Ecamentioning

confidence: 99%

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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“…The intraoperative swelling along the designed double-eyelid line or temporary ptosis may prevent surgeons from taking an accurate measurement of the height of this fold. Several anatomic studies have described in detail the diameter of the artery, but without a limited description of its topoanatomic relations to the adjacent structures within the orbit [3,16] . In the present study we investigated the microsurgical anatomy of the intraorbital part of the OA and its relation to the optic nerve in the sagittal layer.…”

Section: Accurate Course and Relationships Of The Intraorbital Part Omentioning

confidence: 99%