File:Text-book of ophthalmology (1919) (14594867669).jpg

Identifier: textbookofophtha1919fuch (find matches)
Title: Text-book of ophthalmology
Year: 1919 (1910s)
Authors: Fuchs, Hofrat Ernst, 1851- Duane, A. (Alexander), b. 1858, tr
Subjects: Ophthalmology Eye Ophthalmology Eye Diseases
Publisher: Philadelphia & London : Lippincott
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

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nd that of the uvea (ciliary system of vessels).The arteries of the ciliary system are: 1. The posterior ciliary arteries.These arise from the ophthalmic artery, and enter the interior of the eyethrough the sclera in the region of the posterior pole. The majority of thempass at once into the chorioid (short posterior ciliary arteries, c, c, Fig. 153and Ab, Fig. 154). Two of them, however (the long posterior ciliary arte-ries, d, Fig. 153, Al, Fig. 154), run, one on the outer side, the other onthe inner side, between chorioid and sclera as far forward as the ciliarymuscle. Here each divides into two branches, which run in a direction con-centric with the margin of the cornea, and unite with the branches of the ANATOMY AND PHYSIOLOGY OF THE UVEA 379 artery of the opposite side to form an arterial circle, the circulus arteriosusiridis major (Fig. 153, h, Fig. 154, Cima, and Fig. 142, a). This gives off thearteries for the iris, which extend radially from its ciliary to its pupillary mar-
Text Appearing After Image:
Fig. 153.—Blood-vessels op the Eye (Schematic). (After Leber.) The retinal system of vessels is derived from the central artery, a, and the central vein, ai, of theoptic nerve, which give off the retinal arteries, b, and the retinal veins, 61. These end at the ora ser-rata, Or. The system of ciliary vessels is fed by the short posterior ciliary arteries, c, c, the long posteriorciliary arteries, d, and the anterior ciliary arteries, e. From these arise the vascular network of thechorioidal capillaries, /, and of the ciliary body, g, and the circulus arteriosus iridis major, h. Fromthis last spring the arteries of the iris, i, which at the lesser (inner) circumference of the latter formthe circulus arteriosus iridis minor, k. The veins of the iris, h, of the ciliary body, and of the chorioidare collected into the vasa vorticosa, I; some veins (m), however, that come from the ciliary muscleleave the eye as anterior ciliary veins, eu With the latter Schlemms canal, n, forms anastomoses

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