Iridescent vision in glaucoma / by E. Treacher Collins.

  • Collins, E. Treacher (Edward Treacher), 1862-1937.
Date:
[1890?]
Catalogue details

Licence: Public Domain Mark

Credit: Iridescent vision in glaucoma / 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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    7c IRIDESCENT VISION IN GLAUCOMA. By Treacher Collins. Curator of the Moorfields Hospital Museum. The phenomenon of iridescent vision in glaucoma has been attributed to different causes. There are those who have sought a physiological explanation of it in the retina, and those who have looked upon it as being due to some physical cause situated m the refractive media. Priestley Smith* suggests that it is probably due to the latent physiological aberration being in some way rendered manifest or exaggerated. This he thinks is the result of increased pressure, in support of which theory he has described an experiment in which, after pressure on the globe, he saw rings of colours around lamps against a dark background ; the order in which the colours were arranged being altered with the refraction of the eye. Mauthner t thinks that the rings of colour may be the result of nerve irritation, and quotes a case in support of this view. Dobrowolskyt has been led to the same belief, as the result of some experiments he made on his own eyes in a Russian bath. On causing congestion of his head and eyeballs by washing them with hot water, he began to see rainbow-coloured rings round the gaslight, which gradually faded away on the subsidence of the hyperaemia of the head ; he was able to recall these rings by pressure on the globes. • Glaucoma, p. 75. t Die Lehre von Glaucom, p. 48- j Archives of Ophthalmology, vol. xv, p. 207.