DOCSLIB.ORG

Persistent Primitive Dorsal Ophthalmic Artery Associated with Paraclinoid Internal Carotid Artery Aneurysm

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Persistent Primitive Dorsal Ophthalmic Artery Associated with Paraclinoid Internal Carotid Artery Aneurysm JNET 3:39-41, 2009 Image of the Issue Persistent primitive dorsal ophthalmic artery associated with paraclinoid internal carotid artery aneurysm Michihiro TANAKA1) 1) Department of Neurosurgery, Kameda Medical Center ＜Corresponding Address : Department of Neurosurgery Kameda Medical Center, Higashi-cho Kamogawa city Chiba E-mail: [email protected]＞ Received March , : Accepted January , Embryogenesis of the OA is highly complex, and atypical Fig. 1 . This aneurysm was located on the anterior clinoid origin of the OA has been considered rare,,, . The author process. Left internal carotid angiography showed that the illustrates a case of a persistent primitive dorsal ophthalmic ophthalmic artery OA arose from the intracavernous artery DOA associated with a paraclinoid internal carotid portion of the ICA and entered the orbital cavity via the artery ICA aneurysm and discusses the embryology of the superior orbital fissure SOF . This was also confirmed with OA. high resolution multi detector CT and could be recognized as a persistent of the ILT infero lateral trunk . Case Illustration Discussion Case: A -year-old woman presented with a coincidental unruptured asymptomatic aneurysm originating from the left According to Padget , a branch of the ICA, called the supero-lateral wall of the supraclinoid segment of the ICA primitive DOA, emerges in the sequential development of the Fig. 1 Digital subtraction angiography lateral view, left and D rotation angiography oblique view, right showing that the ophthalmic artery comes from the intracavernous portion of the ICA and runs through the SOF. Note the atypical origin and course of the ophthalmic artery. JNET Vol.3 No.1 May 2009 39 Tanaka M. A1 M I VOA Optic Canal SOF SOF DOA（ILT in adult） DOA（ILT in adult） A B C illustrated case Fig. 2 Schematic representation of regression of the VOA and persistent DOA A： The proximal part of the VOA disappears rapidly at the -mm stage of the embryo, and the vessel then arises from the ICA, as in the adult configuration. B： This is the normal development and configuration of the DOA and the adult type of the OA.The DOA regresses dotted line and becomes the infero lateral trunk ILT . C：Schematic representation of the illustrated case. cerebral arterial vasculature of an embryo/fetus at -mm At the -mm stage of the embryo, the anastomosis is crown-rump length. The orbit consists of three components: completed, and the adult configuration of the OA becomes first is the retina peripheral nervous system , second is the identifiable. Until this stage, the primitive OA starts to optic nerve central nervous system , and third are the assimilate the supraorbital branch of the stapedial artery. muscles and glands periorbital structures . The blood This branch not only supplies the intraorbital extraocular supplies to these components reflect their different contents, but also plays a role in the formation of the middle natures,,,, . meningeal artery MMA ,, . Vascularization of the optic cup is derived from two The origin of the OA from the ACA,, , the ICA branches of the primitive ICA, called the primitive ventral bifurcation , or double OAs originating from the same ICA ophthalmic arteries VOA and the DOA. The VOA arises can be explained with relative ease by the stages before the from the future anterior cerebral artery ACA , and the formation of the primitive OA Fig. 2B . Similarly, the OA DOA arises from the carotid siphon, . Later, these arteries arising from the MMA, which is the most frequently reported anastomose near the optic nerve. The VOA makes an variation , the MMA arising from the OA , the OA arising additional anastomosis with the supracavernous portion of the from the basilar artery and the persistent loop of the ICA, ICA,,, . MMA, and OA can be explained by the role of the stapedial At the mm stage, these two arteries supply the orbit. artery and the primitive trigeminal artery,, . The VOA from the ACA through the optic canal gives off the In normal development, the proximal part of the VOA central retinal artery and the nasal ciliary artery, and the disappears rapidly, and the vessel then arises from the ICA, other DOA from the ICA carotid siphon via the SOF gives as in the adult configuration. Finally, the DOA regresses and off the temporociliary artery Fig. 2 . become ILT at the SOF. Although the embryology of the OA This final configuration gives rise to the primitive is complex, it provides an insight into understanding the ophthalmic artery POA , . When the embryo reaches variations of the OA. mm, the stapedial artery, which arises from the primitive hyoidal branch of the petrous ICA, gives rise to the maxillo- References ,, facial and supraorbital branches . When the embryo 㧛） Al-Qahtani S, Tampieri D, Brassard R: Coil Embolization reaches mm, the supraorbital branch of the stapedial of an Aneurysm Associated with an Infraoptic Anterior artery forms an anastomosis with the primitive future Cerebral Artery in a Child. AJNR :, . permanent OA. 㧜） Hamada J, Kitamura I, Kurino M, et al: Abnormal origin of 40 JNET Vol.3 No.1 May 2009 Tanaka M. bilateral ophthalmic arteries. J Neurosurg :, ） Nutik S, Dilenge D: Carotid-anterior cerebral artery . anastomosis: case report. J Neurosurg :, . 㧝） Hassler W, Zentner J, Voigt K: Abnormal origin of the ） Ogawa T, Miyauchi T, Kato T, et al: Internal carotid origin ophthalmic artery from the anterior cerebral artery: of double ophthalmic arteries. Neuroradiology :, neuroradiological and intraoperative fi ndings. Neuroradiology . :, . ） Padget DH: The development of the cranial arteries in the 㧞） Komiyama M: Functional Anatomy of the Brain and Spinal human embryo. Contrib Embryol :, . Vessels. Osaka, Medica Shuppan, , . ） Robinson LR: An unusual human anterior cerebral artery. 㧟） Lasjaunias P, Berenstein A, ter Brugge KG: Surgical J Anat :, . Neuroangiography , Clinical Vascular Anatomy and ） Sade B, Tampieri D, Mohr G: Ophthalmic Artery Variations, Springer-Verlag, nd ed, . Originating from Basilar Artery: A Rare Variant. AJNR 㧠） Lasjaunias P, Moret J, Mink J: The anatomy of the :, . inferolateral trunk ILT of the internal carotid artery. ） Spinnato S, Pasqualin A, Chioffi F, et al: Infraoptic course Neuroradiology :, . of the anterior cerebral artery associated with an anterior 㧡） Matsumura Y, Nagashima M: Anatomical variations in the communicating artery aneurysm: anatomic case report and origin of the human ophthalmic artery with special reference embryological considerations. Neurosurgery :, to the cavernous sinus and surrounding meninges. Cells Tissues . Organs :, . ） Vignaud J, Hasso AN, Lasjaunias P, et al: Orbital vascular 㧢） Mayer PL, Kiev EL: The ontogenic and phylogenetic basis anatomy and embryology. Radiology :, . of cerebrovascular anomalies and variants. Apuzzo MLJ ） Willinsky R, Lasjaunias P, Berenstein A: Intracavernous ed, Brain Surgery. Vol . New York, Churchill Livingstone, branches of the internal carotid artery ICA : comprehensive , . review of their variations. Surg Radiol Anat :, 㧣）Newton TH, Potts DG: Radiology of the Skull and Brain. St. Louis, Mosby, , . JNET Vol.3 No.1 May 2009 41.
Load more

Recommended publications
  • The Ophthalmic Artery Ii
    Brit. J. Ophthal. (1962) 46, 165. THE OPHTHALMIC ARTERY II. INTRA-ORBITAL COURSE* BY SOHAN SINGH HAYREHt AND RAMJI DASS Government Medical College, Patiala, India Material THIS study was carried out in 61 human orbits obtained from 38 dissection- room cadavers. In 23 cadavers both the orbits were examined, and in the remaining fifteen only one side was studied. With the exception of three cadavers of children aged 4, 11, and 12 years, the specimens were from old persons. Method Neoprene latex was injected in situ, either through the internal carotid artery or through the most proximal part of the ophthalmic artery, after opening the skull and removing the brain. The artery was first irrigated with water. After injection the part was covered with cotton wool soaked in 10 per cent. formalin for from 24 to 48 hours to coagulate the latex. The roof of the orbit was then opened and the ophthalmic artery was carefully studied within the orbit. Observations COURSE For descriptive purposes the intra-orbital course of the ophthalmic artery has been divided into three parts (Singh and Dass, 1960). (1) The first part extends from the point of entrance of the ophthalmic artery into the orbit to the point where the artery bends to become the second part. This part usually runs along the infero-lateral aspect of the optic nerve. (2) The second part crosses over or under the optic nerve running in a medial direction from the infero-lateral to the supero-medial aspect of the nerve. (3) The thirdpart extends from the point at which the second part bends at the supero-medial aspect of the optic nerve to its termination.
    [Show full text]
  • Head & Neck Muscle Table
    Robert Frysztak, PhD. Structure of the Human Body Loyola University Chicago Stritch School of Medicine HEAD‐NECK MUSCLE TABLE PROXIMAL ATTACHMENT DISTAL ATTACHMENT MUSCLE INNERVATION MAIN ACTIONS BLOOD SUPPLY MUSCLE GROUP (ORIGIN) (INSERTION) Anterior floor of orbit lateral to Oculomotor nerve (CN III), inferior Abducts, elevates, and laterally Inferior oblique Lateral sclera deep to lateral rectus Ophthalmic artery Extra‐ocular nasolacrimal canal division rotates eyeball Inferior aspect of eyeball, posterior to Oculomotor nerve (CN III), inferior Depresses, adducts, and laterally Inferior rectus Common tendinous ring Ophthalmic artery Extra‐ocular corneoscleral junction division rotates eyeball Lateral aspect of eyeball, posterior to Lateral rectus Common tendinous ring Abducent nerve (CN VI) Abducts eyeball Ophthalmic artery Extra‐ocular corneoscleral junction Medial aspect of eyeball, posterior to Oculomotor nerve (CN III), inferior Medial rectus Common tendinous ring Adducts eyeball Ophthalmic artery Extra‐ocular corneoscleral junction division Passes through trochlea, attaches to Body of sphenoid (above optic foramen), Abducts, depresses, and medially Superior oblique superior sclera between superior and Trochlear nerve (CN IV) Ophthalmic artery Extra‐ocular medial to origin of superior rectus rotates eyeball lateral recti Superior aspect of eyeball, posterior to Oculomotor nerve (CN III), superior Elevates, adducts, and medially Superior rectus Common tendinous ring Ophthalmic artery Extra‐ocular the corneoscleral junction division
    [Show full text]
  • A Review of Central Retinal Artery Occlusion: Clinical Presentation And
    Eye (2013) 27, 688–697 & 2013 Macmillan Publishers Limited All rights reserved 0950-222X/13 www.nature.com/eye 1 2 1 2 REVIEW A review of central DD Varma , S Cugati , AW Lee and CS Chen retinal artery occlusion: clinical presentation and management Abstract Central retinal artery occlusion (CRAO) is an that in turn place an individual at risk of future ophthalmic emergency and the ocular ana- cerebral stroke and ischaemic heart disease. logue of cerebral stroke. Best evidence reflects Although analogous to a cerebral stroke, there that over three-quarters of patients suffer is currently no guideline-endorsed evidence for profound acute visual loss with a visual acuity treatment. Current options for therapy include of 20/400 or worse. This results in a reduced the so-called ‘standard’ therapies, such as functional capacity and quality of life. There is sublingual isosorbide dinitrate, systemic also an increased risk of subsequent cerebral pentoxifylline or inhalation of a carbogen, stroke and ischaemic heart disease. There are hyperbaric oxygen, ocular massage, globe no current guideline-endorsed therapies, compression, intravenous acetazolamide and although the use of tissue plasminogen acti- mannitol, anterior chamber paracentesis, and vator (tPA) has been investigated in two methylprednisolone. None of these therapies randomized controlled trials. This review will has been shown to be better than placebo.5 describe the pathophysiology, epidemiology, There has been recent interest in the use of and clinical features of CRAO, and discuss tissue plasminogen activator (tPA) with two current and future treatments, including the recent randomized controlled trials on the 1Flinders Comprehensive use of tPA in further clinical trials.
    [Show full text]
  • 26. Internal Carotid Artery
    GUIDELINES Students’ independent work during preparation to practical lesson Academic discipline HUMAN ANATOMY Topic INTERNAL CAROTID AND SUBCLAVIAN ARTERY ARTERIES 1. The relevance of the topic Pathology of the internal carotid and the subclavian artery influences firstly on the blood supply and functioning of the brain. In the presence of any systemic diseases (atherosclerosis, vascular complications of tuberculosis and syphilis, fibromuscular dysplasia, etc) the lumen of these vessels narrows that causes cerebral ischemia (stroke). So, having knowledge about the anatomy of these vessels is important for determination of the precise localization of the inflammation and further treatment of these diseases. 2. Specific objectives: - define the beginning and demonstrate the course of the internal carotid artery. - determine and demonstrate parts of the internal carotid artery. - determine and demonstrate branches of the internal carotid artery. - determine and demonstrate topography of the left and right subclavian arteries. - determine three parts of subclavian artery, demonstrate branches of each of it and areas, which they carry the blood to. 3. Basic level of knowledge. 1. Demonstrate structural features of cervical vertebrae and chest. 2. Demonstrate the anatomical structures of the external and internal basis of the cranium. 3. Demonstrate muscles of the head, neck, chest, diaphragm and abdomen. 4. Demonstrate parts of the brain. 5. Demonstrate structure of the eye. 6. Demonstrate the location of the internal ear. 7. Demonstrate internal organs of the neck and thoracic cavity. 8. Demonstrate aortic arch and its branches. 4. Task for independent work during preparation to practical classes 4.1. A list of the main terms, parameters, characteristics that need to be learned by student during the preparation for the lesson.
    [Show full text]
  • Embryology of the Ophthalmic Artery
    Editorial Commentary Interventional Neuroradiology 0(00) 1–2 ! The Author(s) 2019 Embryology of the ophthalmic artery Article reuse guidelines: sagepub.com/journals-permissions DOI: 10.1177/1591019919845511 journals.sagepub.com/home/ine Masaki Komiyama Alternative routes of intra-arterial chemotherapy for misunderstood as dorsal ophthalmic artery).6 The retinoblastoma are based on the embryological and, superficial recurrent ophthalmic artery may run thus, anatomical variations of the ophthalmic artery. through the lateral portion of the SOF, similar to the Although the embryology of the ophthalmic artery is sphenoidal artery or through the lacrimal foramen briefly discussed in this excellent clinical paper,1 I (Hyrtl canal) similar to the lacrimal artery (meningo- would like to comment on this. lacrimal artery) connecting the anterior branch of the The structure of the eye is well conserved among middle meningeal artery to the orbital artery. vertebrates.2 This implies that the vascular structure The embryological origin of the ILT remains specu- of the eye should also be well conserved among verte- lative. It could be the remnant of the primitive maxil- brates, especially among mammals. The basic vascular lary artery of Sabin,7 but this primitive artery dwindles supply of the eye is composed of two sources: one for much earlier than the primitive ventral and dorsal oph- the bulbar structure (retina and choroid structures) and thalmic arteries.5 Thus, the anastomotic branches of the one for the non-bulbar structure (glandular and mus- ILT are mostly composed of the stapedial artery in cular structures),3,4 For an understanding of the origin.3 The primitive maxillary artery is better called embryological origins of these vessels, the bony canal, the primitive pre-mandibular artery in consideration of foramen, and fissure convey many messages to us.
    [Show full text]
  • Anatomy of the Periorbital Region Review Article Anatomia Da Região Periorbital
    RevSurgicalV5N3Inglês_RevistaSurgical&CosmeticDermatol 21/01/14 17:54 Página 245 245 Anatomy of the periorbital region Review article Anatomia da região periorbital Authors: Eliandre Costa Palermo1 ABSTRACT A careful study of the anatomy of the orbit is very important for dermatologists, even for those who do not perform major surgical procedures. This is due to the high complexity of the structures involved in the dermatological procedures performed in this region. A 1 Dermatologist Physician, Lato sensu post- detailed knowledge of facial anatomy is what differentiates a qualified professional— graduate diploma in Dermatologic Surgery from the Faculdade de Medician whether in performing minimally invasive procedures (such as botulinum toxin and der- do ABC - Santo André (SP), Brazil mal fillings) or in conducting excisions of skin lesions—thereby avoiding complications and ensuring the best results, both aesthetically and correctively. The present review article focuses on the anatomy of the orbit and palpebral region and on the important structures related to the execution of dermatological procedures. Keywords: eyelids; anatomy; skin. RESU MO Um estudo cuidadoso da anatomia da órbita é muito importante para os dermatologistas, mesmo para os que não realizam grandes procedimentos cirúrgicos, devido à elevada complexidade de estruturas envolvidas nos procedimentos dermatológicos realizados nesta região. O conhecimento detalhado da anatomia facial é o que diferencia o profissional qualificado, seja na realização de procedimentos mini- mamente invasivos, como toxina botulínica e preenchimentos, seja nas exéreses de lesões dermatoló- Correspondence: Dr. Eliandre Costa Palermo gicas, evitando complicações e assegurando os melhores resultados, tanto estéticos quanto corretivos. Av. São Gualter, 615 Trataremos neste artigo da revisão da anatomia da região órbito-palpebral e das estruturas importan- Cep: 05455 000 Alto de Pinheiros—São tes correlacionadas à realização dos procedimentos dermatológicos.
    [Show full text]
  • Anatomic and Embryologic Analysis of the Dural Branches of the Ophthalmic Artery
    Published January 7, 2021 as 10.3174/ajnr.A6939 REVIEW ARTICLE ADULT BRAIN Anatomic and Embryologic Analysis of the Dural Branches of the Ophthalmic Artery S. Bonasia, S. Smajda, G. Ciccio, and T. Robert ABSTRACT SUMMARY: The ophthalmic artery has one of the most fascinating embryologic developments among the craniofacial arteries. Most of the ophthalmic artery orbital branches develop from the formation and regression of the stapedial artery and share their origin with dural branches of the ophthalmic artery. The concomitant embryologic development of the ophthalmic artery and mid- dle meningeal artery explains adequately the important varieties of anastomosis between these 2 arteries. It also explains the pres- ence of many dural branches from the ophthalmic artery. In this review, we focused on dural branches of the ophthalmic artery with the description of rare variations possible, in particular the ophthalmic artery origin of the middle meningeal artery and the ophthalmic artery origin of the marginal tentorial artery. ABBREVIATIONS: dAVF ¼ dural arteriovenous fistula; ECA ¼ external carotid artery; MMA ¼ middle meningeal artery; MTA ¼ marginal tentorial artery; OA ¼ ophthalmic artery; PDOA ¼ primitive dorsal ophthalmic artery; PVOA ¼ primitive ventral ophthalmic artery; SA ¼ stapedial artery he ophthalmic artery (OA) is a very fascinating artery for its Informed consent was obtained from all individual partici- Tcomplex embryologic development and also for numerous vas- pants included in the study. cular anastomoses developed with branches of the external carotid artery (ECA). The role of the OA in supplying the History dura is not well-known, but the understanding of the dural Meyer,1 in 1887, considered a pioneer in the orbital vascular anat- function of the OA and also of its possible variations is a cor- omy, was the first to precisely describe all branches of the oph- nerstone for surgical and endovascular treatment of dural thalmic artery, including its dural territory.
    [Show full text]
  • Vasomotor Reactivity in the Ophthalmic Artery Mehmet Tayfun Kaşıkçı1, Güray Koç2
    ORIGINAL ARTICLE 33 DOI: 10.4274/gulhane.galenos.2019.784 Gulhane Med J 2020;62:33-7 Vasomotor reactivity in the ophthalmic artery Mehmet Tayfun Kaşıkçı1, Güray Koç2 1Canakkale City Hospital, Clinic of Neurology, Canakkale, Turkey 2University of Health Sciences Turkey, Gülhane Faculty of Medicine, Department of Neurology, Ankara, Turkey Date submitted: ABSTRACT 31.07.2019 Aim: The aim of this study was to obtain information about reactivity differences in ophthalmic Date accepted: artery (OA) and middle cerebral artery (MCA) presented as a change in blood flow velocity 01.10.2019 (BFV) induced by the breath holding in healthy individuals. Online publication date: 15.03.2020 Methods: Cerebral vasomotor reactivity (VMR) is interpreted indirectly with the increase in the BFV detected in the basal arteries, secondary to a vasodilatory stimulus as breath holding. Bilateral MCA and OA were evaluated by using transcranial Doppler ultrasonography in 15 Corresponding Author: volunteers. Mehmet Tayfun Kaşıkçı MD, Results: The basal velocities obtained from MCAs and from bilateral OA were symmetrical and Canakkale City Hospital, Clinic of did not change according to the side (p>0.05). The ratio of MCA to OA flow velocities had no Neurology, Canakkale, Turkey significant difference between the sides (p>0.05). The OA flow velocities were significantly [email protected] lower than the ipsilateral MCA flow velocities. Breath-holding index (BHI) was used to evaluate the VMR. Although the BHI values were not symmetrical and statistically different between ORCID: orcid.org/0000-0001-7256-6191 the sides (p>0.05), the difference between the ipsilateral MCA BHI and OA BHI was significant (p<0.05).
    [Show full text]
  • Anatomic and Angiographic Analyses of Ophthalmic Artery Collaterals in Moyamoya Disease
    Published April 12, 2018 as 10.3174/ajnr.A5622 ORIGINAL RESEARCH EXTRACRANIAL VASCULAR Anatomic and Angiographic Analyses of Ophthalmic Artery Collaterals in Moyamoya Disease X T. Robert, X G. Ciccio`, X P. Sylvestre, X A. Chiappini, X A.G. Weil, X S. Smajda, X C. Chaalala, X R. Blanc, X M. Reinert, X M. Piotin, and X M.W. Bojanowski ABSTRACT BACKGROUND AND PURPOSE: Moyamoya disease is a progressive neurovascular pathology defined by steno-occlusive disease of the distal internal carotid artery and associated with the development of compensatory vascular collaterals. The etiology and exact anatomy of vascular collaterals have not been extensively studied. The aim of this study was to describe the anatomy of collaterals developed between the ophthalmic artery and the anterior cerebral artery in a Moyamoya population. MATERIALS AND METHODS: All patients treated for Moyamoya disease from 2004 to 2016 in 4 neurosurgical centers with available cerebral digital subtraction angiography were included. Sixty-three cases were evaluated, and only 38 met the inclusion criteria. Two patients had a unilateral cervical internal carotid occlusion that limited analysis of ophthalmic artery collaterals to one hemisphere. This study is consequently based on the analysis of 74 cerebral hemispheres. RESULTS: Thirty-eight patients fulfilled the inclusion criteria. The most frequently encountered anastomosis between the ophthalmic artery and cerebral artery was a branch of the anterior ethmoidal artery (31.1%, 23 hemispheres). In case of proximal stenosis of the anterior cerebral artery, a collateral from the posterior ethmoidal artery could be visualized (16 hemispheres, 21.6%). One case (1.4%) of anastomosis between the lacrimal artery and the middle meningeal artery that permitted the vascularization of a middle cerebral artery territory was also noted.
    [Show full text]
  • Aneurysm and Infundibular Dilatation at an Unusual Origin of the Ophthalmic Artery 흔치 않은 눈동맥 기시부에서 발견된 뇌동맥류와 누두부 확장
    Case Report pISSN 1738-2637 / eISSN 2288-2928 J Korean Soc Radiol 2014;71(4):164-168 http://dx.doi.org/10.3348/jksr.2014.71.4.164 Aneurysm and Infundibular Dilatation at an Unusual Origin of the Ophthalmic Artery 흔치 않은 눈동맥 기시부에서 발견된 뇌동맥류와 누두부 확장 Hyun Soo Kim, MD, Eui Jong Kim, MD, Kyung Mi Lee, MD, Woo Suk Choi, MD Department of Radiology, Kyung Hee University Hospital, Seoul, Korea The ophthalmic artery usually arises from the anteromedial or superomedial aspect of the internal carotid artery. Rarely does it arise from the medial or posteromedial Received June 9, 2014; Accepted August 8, 2014 aspect of the internal carotid artery. In this paper, the authors report two cases of Corresponding author: Eui Jong Kim, MD Department of Radiology, Kyung Hee University aneurysm and infundibular dilatation found at unusual sites of origin in the oph- Hospital, 23 Kyungheedae-ro, Dongdaemun-gu, thalmic artery and review the literature about possible etiologies contributing to the Seoul 130-701, Korea. anatomic variations. Tel. 82-2-958-8611 Fax. 82-2-968-0787 E-mail: [email protected] Index terms This is an Open Access article distributed under the terms Ophthalmic Artery of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) Vascular Anomaly which permits unrestricted non-commercial use, distri- Carotid-Ophthalmic Aneurysm bution, and reproduction in any medium, provided the Infundibular Dilatation original work is properly cited. INTRODUCTION ty. The patient had been treated for hypertension. She had no his- tory of head trauma and there were no significant abnormal The ophthalmic artery (OA) is the first major branch of the findings, except for slight elevation of erythrocyte sedimentation ophthalmic segment of the internal carotid artery (ICA).
    [Show full text]
  • The Ophthalmic Artery* Iii
    Br J Ophthalmol: first published as 10.1136/bjo.46.4.212 on 1 April 1962. Downloaded from Brit. J. Ophthal. (1962) 46, 212. THE OPHTHALMIC ARTERY* III. BRANCHES BY SOHAN SINGH HAYREHt Government Medical College, Patiala, India THE pioneer worker in the study of the ophthalmic artery, particularly its branches and their variations, was Meyer (1887), whose observations on twenty cases have been accepted more or less as classical for the last three- quarters of a century. No detailed investigation has since been carried out in this field and the descriptions of the branches of this artery which appear in the various text-books of anatomy and ophthalmology merely reflect his conclusions. Moreover, little information regarding the branches and their anomalies is available in the literature. It was therefore thought desirable to study this problem afresh in detail. Material This study was carried out on 59 human orbits obtained from 36 cadavers from the dissection room. In 23 cadavers both orbits were examined, and only one side in the remaining thirteen. All the cadavers were those of persons past middle age, except three which were of children aged 4, 11, and 12 years. Method http://bjo.bmj.com/ Neoprene latex was injected in situ, either through the internal carotid artery or through the most proximal part of the ophthalmic artery, after opening the skull and removing the brain. The artery was first irrigated with water. After the injection, the part was covered with cotton wool soaked in 10 per cent. formalin for from 24 to 48 hours to coagulate the latex.
    [Show full text]
  • Analysis of Morphological Variation of the Internal Ophthalmic Artery in the Chinchilla (Chinchilla Laniger, Molina)
    Veterinarni Medicina, 60, 2015 (3): 161–169 Original Paper doi: 10.17221/8063-VETMED Analysis of morphological variation of the internal ophthalmic artery in the chinchilla (Chinchilla laniger, Molina) J. Kuchinka Institute of Biology, Jan Kochanowski University in Kielce, Kielce, Poland ABSTRACT: The aim of this investigation was the analysis of the variability within the internal and external ophthal- mic artery in the chinchilla (Chinchilla laniger, Molina). The head vasculature of 65 individuals was analysed, with particular emphasis on the internal ophthalmic artery originating from the central and rostral part of the cerebral arterial circle. Head blood vessels were filled with acrylic latex for vascular corrosion casting. The results showed ten variants of blood supply for the orbit, with a predominance of the first variant (66.1%) = bilateral presence of the external ophthalmic artery originating from the maxillary artery. Other variants differed in symmetry and asymmetry, sites of origination and the coexistence of both internal and external arteries. Vascularisation of the brain in chinchillas originates mainly from the vertebra-basilar system. The observed variability seems to confirm the role of the basilar artery in the arterial blood supply of the brain in this species. Keywords: variability; head arterial system; rodents The arterial system in the head of animals, in- rabbit Ruskell (1962). Circulatory variations of the cluding mammals, has long been of interest for ophthalmic artery in humans were described by anatomists, from the early works by Hyrtl (1854), Grossman et al. (1982). Sade et al. (2004) reported Tandler (1899), Hafferl (1938) to more recent pa- that the ophthalmic artery originates from the basi- pers by Bugge (1971a, 1971b, 1972, 1978, 1985) and lar artery.
    [Show full text]