Transactions . t isI mm. in diameter. Its sectioned surface is translucent andshows no striae. Sections made in suitable directions, show thatthe nerve merges below with a mass of tissue, somewhat largerin diameter than the nerve itself, which accompanies the nervethrough the sclera into the retina. The sheath of the nerve isformed by a continuation of the sclera and near the globe sur-rounds both the nerve and the tissue beneath it. There is nosubdural space visible. By comparing the cut surface of the cystat the point it was severed from the globe, with the posterioraspect of the latter, it
Transactions . t isI mm. in diameter. Its sectioned surface is translucent andshows no striae. Sections made in suitable directions, show thatthe nerve merges below with a mass of tissue, somewhat largerin diameter than the nerve itself, which accompanies the nervethrough the sclera into the retina. The sheath of the nerve isformed by a continuation of the sclera and near the globe sur-rounds both the nerve and the tissue beneath it. There is nosubdural space visible. By comparing the cut surface of the cystat the point it was severed from the globe, with the posterioraspect of the latter, it is apparent that the sheath of the nervewas continuous below with the wall of the cyst. The defect inthe sclera, including the space occupied by the optic nerve, is 4mm. in greatest diameter and is completely filled up with tissuederived from the retina, which can also be traced into the cyst. The cyst is approximately 18 mm. in diameter and shows asolid mass of tissue where it was connected with the globe. Its. QuACKENBOSS: Case of Congenital Cyst of the Orbit. 109 wall varies from .1 mm. to 2 mm. in thickness, and has a perfectlysmooth inner surface. The fluid contained in the cyst was lostat the operation. Histological examination. The posterior half of the corneapresents a normal appearance. Both Descemets membrane andthe endothelium are intact and normal. Anteriorly the cornealstroma passes rather abruptly into a layer of vascularized loosefibrous tissue and reticulum similar to the sub-epithelial connectivetissue of the bulbar conjunctiva, with which it is continuous. Thislayer is covered with epithelium which bears little resemblanceto that of a normal cornea. It is thicker and sends down deepinterpapillary down growths, thus resembling normal skin. Bow-mans membrane is absent. The ligamentum pectinatum is easily recognizable as such,but is composed of much coarser trabeculae than is normal. Thecanal of Schlemm is often well seen. The ciliary muscle is con-nected with th
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectophthalmology, bookye
