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Saturday, July 18, 2020 | History

6 edition of Compressive Optic Nerve Lesions at the Optic Canal found in the catalog.

Compressive Optic Nerve Lesions at the Optic Canal

Renate Unsold

Compressive Optic Nerve Lesions at the Optic Canal

Pathogenesis Diagnosis Treatment

by Renate Unsold

  • 160 Want to read
  • 37 Currently reading

Published by Springer-Verlag .
Written in English


The Physical Object
Number of Pages138
ID Numbers
Open LibraryOL7444054M
ISBN 10038718838X
ISBN 109780387188386

To find correlations between diameters of the optic nerve sheath (ONSD), the eyeball, and the optic canal that might be important for intracranial pressure monitoring. In a prospective cohort study, the CT data of consecutive adults (18+) with healthy eyes and optic nerves and absence of neurological diseases were collected and analyzed. The optic pathway includes the retina, optic nerve, optic chiasm, optic radiations, and occipital cortex (see figure Higher visual pathways). Damage along the optic pathway causes a variety of visual field defects. The type of field defect can help localize the lesion (see table Types of Field Defects).

OPTIC NERVE + OPTIC NERVE LESIONS Robert William B. King, MD 82 ANATOMY Begins: Optic disc (Anatomically) Ganglion cells of retina (physiologically). ANATOMY First part of ON Approx. M ganglion cells. Axons travers the sclera. through lamina cribrosa ( channels) 1mm Sheathed with dura and. myelin coating once posterior. 2 Optic Nerve 11 • Positioning of the optic chiasm: The prefi xed chiasm(9%) lies over the tuberculum sellae, 80% over the sella turcica (L., “Turkish saddle”); the postfi xed chiasm (11%) lie s over the dorsum sellae. • The optic chiasm (Fig. ) is loc ated below the suprachi- asmatic recess of the third ventricle, lamina terminalis.

  Retrobulbar optic neuropathy (RBON) is a characterized by normal optic disc appearance and specific visual symptoms. As the injury site of the pathologic process in this optic neuropathy (ON) is behind the optic nerve head, in the other words, behind the lamina cribrosa, or in the intra-orbital or intra-canalicular or intracranial parts of the optic nerve, the optic disc seems normally. Compared to the optic nerve, the ophthalmic artery is located inferolaterally within the canal. The left and right optic canals are 25mm apart posteriorly and 30mm apart anteriorly. The canals themselves are funnel-shaped (narrowest anteriorly).


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Compressive Optic Nerve Lesions at the Optic Canal by Renate Unsold Download PDF EPUB FB2

Compressive Optic Nerve Lesions at the Optic Canal: Pathogenesis - Diagnosis - Treatment Softcover reprint of the original 1st ed. Edition by Renate Uns\xf6ld (Author), Wolfgang Seeger (Contributor)Cited by: 7.

Compressive Optic Nerve Lesions at the Optic Canal Pathogenesis — Diagnosis — Treatment. Authors Search within book. Front Matter. Pages I-X.

PDF. Introduction. Renate Unsöld, Wolfgang Seeger. CT Findings of Compressive Lesions at the Optic Canal. Unsöld, G. Greeven.

Compressive Optic Nerve Lesions at the Optic Canal Pathogenesis – Diagnosis – Treatment. Authors: Unsöld, Renate, Seeger, Wolfgang Free Preview. Compressive Optic Nerve Lesions at the Optic Canal. by Renate Unsöld,Michael Bach,Wolfgang Seeger,Hans-Rudolf Eggert,Gabriele Greeven,Jack DeGroot.

Thanks for Sharing. You submitted the following rating and review. We'll publish them on our site once we've reviewed : Springer Berlin Heidelberg. This work explores the anatomic vulnerability of the optic nerve as it passes from the orbit to the intracranium through a narrow canal surrounded by arteries, bone, and dura.

The text provides individual chapters on anatomy, clinical signs and symptoms, electrophysiologic testing, neuroradiologic findings, and a surgical approach to lesions in Author: Joseph F.

Rizzo. Get this from a library. Compressive Optic Nerve Lesions at the Optic Canal: Pathogenesis - Diagnosis - Treatment. [Renate Unsöld; Wolfgang Seeger] -- This comprehensive monograph opens up sensational new diagnostic and therapeutic perspectives. The topographic information is presented with excellent anatomic preparations.

The wide spectrum of. Book Review; Published: July Compressive optic nerve lesions at the optic canal. Unsöld, W.

Seeger: Pathogenesis-Diagnosis-Treatment. With the collaboration Author: A. Wackenheim. Compressive optic nerve lesions at the optic canal.

Berlin ; New York: Springer-Verlag, © (OCoLC) Online version: Unsöld, R. (Renate), Compressive optic nerve lesions at the optic canal.

Berlin ; New York: Springer-Verlag, © (OCoLC) Document Type: Book: All Authors / Contributors. The optic nerve is particularly vulnerable to injury by a compressive force where it is adjacent to bone or in a small confined space (eg, orbital apex, optic canal).

[ 3 ] The clinical hallmarks of a compressive optic neuropathy include slowly progressive vision loss, reduced visual acuity and/or visual field, dyschromatopsia, a relative.

"Compressive lesions within the orbit, the optic canal and, rarely, intracranially, may result in disc swelling (Fig. Most compressive optic neuropathies, whether they result from orbital or intracranial lesions, are not associated with optic disc swelling.

Dural sheath of the optic nerve. The dural sheath is quite thick and fibrous. It is continuous with the cranial dura mater (Fig. ), and this feature allows us to have a general effect on the dura mater when we manipulate the optic adherence of the optic nerve to the walls of the optic canal, through the intermediary of the meninges, implicates the nerve in the case of skull.

It was surprising that so many patients had arcuate scotomas and other patterns reflecting optic nerve fiber bundle injury since a central scotoma generally is considered to be the most common type of visual field loss associated with compressive injury of the optic nerve, 19 Similar patterns of visual field loss, including steeply sloped.

Summary: We describe six cases of cannalicular optic nerve meningioma in which the diagnosis was missed for more than 1 year after the onset of symptoms. Clinical features led to a misdiagnosis of optic neuritis in all cases.

Although atypical clinical progression led to further imaging studies, they did not provide the diagnosis because of inappropriate imaging protocols. In this chapter, we discuss the main use of OCT in compressive optic neuropathies including primary optic nerve tumors, extrinsic optic nerve compression by tumors or other orbital lesions and the.

Lee "Compressive Optic Nerve Lesions at the Optic Canal Pathogenesis – Diagnosis – Treatment" por Renate Unsöld disponible en Rakuten : Springer Berlin Heidelberg.

Kong DS, Shin HJ, Kim HY, et al. Endoscopic optic canal decompression for compressive optic neuropathy. J Clin Neurosci. ;18(11) Berhouma M, Jacquesson T, Abouaf L, et al. Endoscopic endonasal optic nerve and orbital apex decompression for nontraumatic optic neuropathy: Surgical nuances and review of the literature.

Compressive processes of the optic nerve may occur in the intraorbital region, intracanalicular region, optic chiasm, or optic tracts. Those lesions compressing the orbital optic nerve include. The optic nerve, also known as cranial nerve II, or simply as CN II, is a paired cranial nerve that transmits visual information from the retina to the humans, the optic nerve is derived from optic stalks during the seventh week of development and is composed of retinal ganglion cell axons and glial cells; it extends from the optic disc to the optic chiasma and continues as the optic.

Optic (II) nerve. Anatomy. The optic nerve fibres are the axons of the retinal ganglion cells. At the optic chiasm, only the fibres derived from the nasal parts of the retina decussate, join with the non-decussating fibres and pass backwards in their respective optic tracts to.

Intracranial optic nerve • Lengthmm • Dmmm Extends post & medially ascending at an angle of 45º to join the chiasma Blood supply- pial vessels arising from ICA branches from ant cerebral and anterior communicating artery 19 Optic nerve head 4 layers of Optic Nerve Head: • Surface nerve fiber layer.

Causes Ischemic optic neuropathy. In ischemic optic neuropathies, there is insufficient blood flow (ischemia) to the optic nerve. The anterior optic nerve is supplied by the short posterior ciliary artery and choroidal circulation, while the retrobulbar optic nerve is supplied intraorbitally by a pial plexus, which arises from the ophthalmic artery, internal carotid artery, anterior cerebral.1.

Brain. Mar;98(1) Compressive lesions of the optic nerves and chiasm. Pattern of recovery of vision following surgical treatment.BOOK REVIEWS BOOK REVIEWS Book reviewed in this article: Ophthalmology Today: LN Ferraz De Olivieira (ed) Compressive Optic Nerve Lesions at the Optic Canal: R Unsold, W Seeger Eye, Brain, and Vision: DH Hubel Ocular Circulation & Neovascularisation, Documenta Ophthalmologica Proceedings Series Edited by D Ben Ezra, SJ Ryan, BM Glaser, RP Murphy .