The eye as an aid in general diagnosis : a hand-book for the use of students and general practitioners / by E. H. Linnell.

  • Linnell, E. H.
Date:
1897
Catalogue details

Licence: Public Domain Mark

Credit: The eye as an aid in general diagnosis : a hand-book for the use of students and general practitioners / by E. H. Linnell. Source: Wellcome Collection.

Provider: This material has been provided by UCL Library Services. The original may be consulted at UCL (University College London)

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    that we have here a continuitj^ of nervous structure sub- ject to identical morbid processes. Moreover, the optic nerve sheaths enter into the structure of the tunics of the eyeballs on the one side, and are continuous with the cerebral meninges on the other; and the sub-vagi- nal spaces are tubular prolongations of the cranial sub- arachnoid and sub-dural spaces. It is easy to under- stand, therefore, how meningitis may be complicated with peri- or insterstitial neuritis, and how watery or purulent exudations in the cranial cavity may cause dis- tention of the nerve sheaths and induce inflammatory changes in the papilla and retina. Again, derangement of the cerebral circulation is accompanied with simulta- neous changes in the retinal vessels, and the ophthal- moscope enables one to recognize hyperaemia and anae- mia of the retina, hemorrhage, embolism of the arteria centralis, and the varieties of intra-ocular inflammation which are symptomatic of constitutional affections. Fre- quently before the sight begins to suffer, the ophthal- 6