On the origin of ruptures in detached retinae / by E. Treacher Collins.

  • Collins, E. Treacher (Edward Treacher), 1862-1937.
Date:
[1896]
Catalogue details

Licence: Public Domain Mark

Credit: On the origin of ruptures in detached retinae / by E. Treacher Collins. 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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    of a yellow-coloured substance, and on the inner surface of the choroid were some patches of a similar material. Microscopically this was found to consist of epithelial cells with pigment granules in them, and had evidently been derived from the pigment epithelium lining the inner surface of the elastic lamina. There were several large areas of atrophy in the choroid. In the yellow- spot region there was a patch of atrophy with a pig- mented margin, and the sclerotic in that position was somewhat depressed backwards. Microscopical exami- nation of this region 'showed the sclerotic to have been somewhat thinned, the vascular layers of the choroid were considerably atrophied, and the elastic lamina and pigment epithelial layer were entirely absent. Adherent to the atrophied choroid and intimately incorporated with it was some atrophied retinal tissue completely isolated from the remainder of the retina, which lay folded in the centre of the globe. At the margin of the atrophic area in the choroid on either side of the section was a collection of inflammatory round cells over which there was some heaping up and thickening of the pigment epithelium. In each of these two eyes there must have been, previous to the occurrence of detachment of the retina, a localised central patch of choroido-retinitis which resulted in atrophy of the two tunics and firm adhesion of them ; so firm must have been the adhesion that when the detachment occurred the patch of adherent retina became torn away from the rest of that membrane instead of becoming separated from the choroid. It is by no means uncommon to meet, in the patholo- gical examination of eyes, with retinae which have become completely detached except in one or two places where they have acquired adhesion to the choroid as the result of past inflammation. In eyes with such a condition the retina is found lying folded in the centre of the globe, while passing outwards from it are small columns which go to the places where the adhesions exist. These cases