Pathogenesis of visual field defects. Role of the ciliary circulation.
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The present study demonstrates such a sectoral blood supply in the optic nerve head and choroid and is of considerable significance in explaining the site of the lesion and the pathogenesis of these defects.Abstract:
Clinically the presence of nerve fibre bundle defects in glaucoma and non-glaucomatous lesions, and altitudinal or vertical hemianopias in pre-chiasmal lesions has been known for a long time. These suggest a sectoral lesion in the optic nerve or retina. In the majority of such cases, no retinal lesion is seen to account for these visual field defects. It has been presumed that the lesion lies in the optic nerve. Such a visual field defect can be produced only by a sectoral lesion. Most of these field defects are considered to be vascular in origin, but studies of the blood supply of the optic nerve have so far failed to demonstrate any segmental blood supply to the nerve which could explain them. The present study demonstrates such a sectoral blood supply in the optic nerve head and choroid and is of considerable significance in explaining the site of the lesion and the pathogenesis of these defects.read more
Citations
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Book ChapterDOI
Cilioretinal Artery Occlusion
TL;DR: The cilioretinal artery was first described by Muller in 1856 and usually arises from the peripapillary choroid or directly from one of the short posterior ciliary arteries; this origin has important clinical implications, as discussed below.
Book ChapterDOI
The Posterior Ciliary Artery
TL;DR: The posterior ciliary artery (PCA) is the main source of blood supply to the optic nerve head (ONH), the choroid up to the equator, the retinal pigment epithelium (RPE), the outer 130 μ of the retina (and, when a cilioretinal artery is present, the entire thickness ofThe retina in that region).
Journal ArticleDOI
Challenging Diagnosis of Atypical Toxoplasmic Neuroretinitis in Children: A Case Series
Rio R,La Distia Nr,Made S +2 more
TL;DR: Toxoplasmosis may present as unilateral neuroretinits and may resemble other optic nerve inflammation at its initial presentation.
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Bilateral simultaneous inferior altitudinal hemianopia due to ischemic optic neuropathy.
TL;DR: This case suggests that symmetrical and simultaneous bilateral defects of visual fields may be due to a prechiasmal lesion of the visual pathways.
Journal ArticleDOI
The Incidence, Heredity and Aetiology of Open Angle Glaucoma
TL;DR: This paper reviews the literature available in terms of incidence, aetiology and genetic basis, together with the relationship between intraocular pressure, blood pressure, and optic nerve disease and concludes that current views in each area of the disease are diverse.
References
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Journal ArticleDOI
The Vertebrate Visual System
TL;DR: The 418 pages devoted to these and other structures portray the system as a whole in an orderly fashion and with considerable new material, including a detailed account of the blood supply and drainage.
BookDOI
Kurƶes Handbuch der Ophthalmologie: Dritter Band Orbita · Nebenhöhlen · Lider Tränenorgane Augenmuskeln Auge und Ohr
F. Schieck,M. ƶur Nedden,H. Ƶondek,M. Ƶade,Fr. Wohlwill,O. Weiss,L. W. Weber,R. Thiel,H. Steidle,R. Seefelder,A. Birch-Hirschfeld,C. Bakker,M. Bartels,C. Behr,F. Best,R. Bing,A. Brückner,W. Comberg,R. Cords,E. Cramer,R. Dittler,H. Dold,P. Eisler,H. Erggelet,A. Franceschetti,E. Frey,W. Gilbert,C. Grouven,R. Helmbold,K. vom Hofe,J. Igersheimer,A. Jess,A. Kohlrausch,H. Köllner,R. Kümmell,G. Lenƶ,L. Lichtwitƶ,A. Linck,Walther Löhlein,W. Meisner,H. Otto,R. A. Pfeifer,F. Quensel,W. Reis,H. Rönne,W. Runge,C. H. Sattler +46 more
TL;DR: An important chapter deals with workmen's compensation, a subject that is rapidly becoming of practical importance in all countries, and a best exponent than Thiel could not have been found, as his researches have covered many parts of this field.