. Pathology and bacteriology [electronic resource]. Ophthalmology; Eye; Eye; Bacteriology; Ophthalmology; Eye; Bacteriology; Eye. 178 NEOPLASMS growth cannot be said to be definitely determined. It may be simply a blockage of blood supply, or due to the occurrence of some intercurrent inflammation starting in the uveal tract, the toxin exciting which, acts on the cells of the growth besides causing the other destructive changes. Fig. 87.—The lateral halves of the two eyes of a boy aged sixteen months. The left which is much shrunken is full of gliomatous growth, the lens is absent. The right i
. Pathology and bacteriology [electronic resource]. Ophthalmology; Eye; Eye; Bacteriology; Ophthalmology; Eye; Bacteriology; Eye. 178 NEOPLASMS growth cannot be said to be definitely determined. It may be simply a blockage of blood supply, or due to the occurrence of some intercurrent inflammation starting in the uveal tract, the toxin exciting which, acts on the cells of the growth besides causing the other destructive changes. Fig. 87.—The lateral halves of the two eyes of a boy aged sixteen months. The left which is much shrunken is full of gliomatous growth, the lens is absent. The right is of normal size, a gliomatous growth involves the whole retina. Case recorded in the R. Lond. Ophth. Hosp. Reps., XIII, 1892, 393. in the eye. The fact that several shrunken eyes containing gliomatous growths, which have been examined histologi- cally, showed inflammatory inflltration of the choroid lends support to this latter view. The blood-vessels in glioma of the retina have thin walls composed of a lining endothelium with connective tissue external to it. This latter is hable to undergo hyaline and calcareous degeneration. Hemorrhages into the growth are of frequent occurrence and sometimes extensive. Gliomata of the Optic Nerve or Gliomatosis.—^New growths of the optic nerve starting in the neuroglia, as already stated, do not form well defined localised tumours, but diffuse intra-dural thickenings. They frequently involve not only the orbital but also the intracranial portion of the nerve, sometimes extending right up to the chiasma. Occasionally a new growth in the optic nerve is only an extension of a wide spread intracranial gliomatosis. This form of new growth of the optic nerve usually attracts attention in early life, the large majority manifesting themselves before the age of twenty. A new growth situated in the cone-shaped area behind the globe, bounded laterally by the recti muscles, causes proptosis in the line of the orbital axis, without at first any. P
Size: 2243px × 1114px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjecteye, booksubjectophth
