. A treatise on diseases of the eye . Lying between thebundles and lamelhie are small spaces—lacunar—and uniting these,numerous small canals—canaJiculw. These lacuna and canaliculaetogether form the canalicular lymph system of Recklinghausen. In eachlacuna a branching cell is found, whose protoplasmic processes extendalong the canalicuhe, anastomosing with those of adjacent cells. Thesecells are the fixed cells of the cornea, in contradistinction to the leuko-cytes which, by amebic movements, penetrate to every part of thecornea—the migratory cells of the cornea. Membrane.—The four
. A treatise on diseases of the eye . Lying between thebundles and lamelhie are small spaces—lacunar—and uniting these,numerous small canals—canaJiculw. These lacuna and canaliculaetogether form the canalicular lymph system of Recklinghausen. In eachlacuna a branching cell is found, whose protoplasmic processes extendalong the canalicuhe, anastomosing with those of adjacent cells. Thesecells are the fixed cells of the cornea, in contradistinction to the leuko-cytes which, by amebic movements, penetrate to every part of thecornea—the migratory cells of the cornea. Membrane.—The fourth layer of the cornea (Descemetsmembrane) is a thin homogeneous membrane possessing cliemical con-stitutents which serve to distinguish it from Bowmans is of the opinion that this corneal membrane is the product CORNEA 55 of the endothelial cells of the cornea which rest upon it. The membraneof Descemet breaks up into numerous fibers at the periphery of thecornea, forming the ligamentum pectinatum. Fig. 26. ?ti^^iinm- 2 Bowmans membrane; 3. substantia jiropria; view of cornea: l^^^f^:^^^ 6 and d, ; c. lacuna-; .. sdora;Descemets membrane; 5, endothelium, o, nor^e , limbus conjunctivae. (Schafer.) 5. E,«Iolhem I^ fifth layer of tl,e ™>« «;^f ^, ,;„^«in,lp laver of polvROnal cells of tlie endothelial vanelj, «hnh l^<rl^peculartri? the ligamentum peetinatum over n„oeelll that are mnch thinner, tl,at cover the fibers o tins hsament. Vascular do not occur m the Ne^er-These are derived from the ciliary plexus lonne, lie lon^and sZri ci i; nerves. They pass through the sclera on the on„.r s,de 56 ANATOMY of Sclileiiinis canal, and form a network, tlie plexus annidaris, in thevicinity of the margin of the cornea. (See Plate VIII.) From this plexustwo sets of twigs are given off: (a) One set passes to the conjunctiva,where they join the conjunctival nerves and
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecteyediseases, bookyear
