An experimental inquiry into the functions of the ophthalmic ganglion / by C. Radclyffe Hall.

  • Hall C. Radclyffe (Charles Radclyffe), 1820-1879.
Date:
[1847?]
Catalogue details

Licence: Public Domain Mark

Credit: An experimental inquiry into the functions of the ophthalmic ganglion / by C. Radclyffe Hall. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

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    trout, and eel, except in the first as regards the choroid body, T found the arrangement very similar. Neither in these nor in such reptiles as I have examined (frogs and newts) is there any lenticu- lar ganglion. The connection between the lenticular ganglion and the sym- pathetic system is well demonstrated in the sheep, in which a large grey nerve may sometimes be traced distinctly from the ophthal- mic to the cavernous ganglion. In the dog and cat also, grey fila- ments are given slightly to the third, and in abundance to the fifth nerve, as they pass by the side of the internal carotid artery. The oft-mentioned communication between the sympathetic and the sixth nerve is not so great as it appears. A band of white fibres passes from the sixth nerve, and some grey filaments to it; but of the latter the greater number, as Panizza asserts, merely twine round the sixth, and then enter the fifth nerve. In man, Mr Dalrymple remarks, that the long root of the len- ticular ganglion separates from the nasal nerve whilst within the cavernous sinus, ramifying on the sides of the internal carotid artery, and within the bony canal that contains this blood-vessel, it unites with other sympathetic nerves, communicating directly with the superior cervical ganglion. I have little doubt that there is a distinct continuity of grey fibre between the superior cervical ganglion and the lenticular ; but I have never found the long root exactly as thus described. I have always been able to trace it, most readily in the foetus, as a distinct thread into the Gasserian ganglion, beyond which I could not follow it. The Gasserian ganglion in man, as in the cat, dog, sheep, and ox, re- ceives grey filaments from the sympathetic beneath it. Some of these may enter the long root of the lenticular ganglion. I never could trace any filaments from this long root through the sensory into the subjacent motory portion of the fifth. I believe that the lenticular ganglion communicates with the cavernous plexus, chief- ly if not solely through the medium of grey fibres which are in- closed in the sheath of the fifth nerve, and to a less extent in that of the third. Nervous filaments from the sympathetic have been described as being traceable into the lenticular ganglion by Fon- tana,* Bock, Hirzel, Cloquet, Lobstein, Ribes, Chaussier, and Hyrtl. Tiedemann and Arnold state, that a nervous filament passes directly from Meckel's to the lenticular ganglion. This I have never found either in man or animals. Hyrtl, who has ex- amined this filament microscopically, considers it merely a fibrous chord. The ultimate distribution of the ciliary nerves is perhaps not quite settled. That by far the greatest number may be distinctly traced into the ciliary circle, and their ramifications with care fol- • Diss. Inaug. de Amaurosi Functionali. Auctore Ed. Stephens, M.D. 1827,