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II.—On the Cause and Cure of Cataract

  • David Brewster

My attention was called to the subject of Cataract, in consequence of having, about forty years ago, experienced an incipient attack of that complaint, and studied its progress and cure.

While engaged in a game at chess with Sir James Hall, who was a very slow player, I amused myself in the intervals with looking at the streams of light which radiated from the flame of a candle in certain positions of the eyelids. In one of these observations I was surprised by a new phenomenon, of which I did not immediately see the cause. The flame of the candle was surrounded with lines of light, of an imperfectly triangular form, some parts of which were deeply tinged with the prismatic colours. Upon going home from the chess club, this optical figure was seen more distinctly round the moon, and of course it appeared, with more or less brightness, round every source of light.

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page 13 note * American Journal of the Medical Sciences. January 1860.

page 13 note † Medical Times and Gazette. March 31, 1860.

page 13 note ‡ Report of the British Association, 1836, p. 111; and 1837, p. 12.

page 13 note § North British Review, vol. xx. p. 167. November 1856.

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Earth and Environmental Science Transactions of The Royal Society of Edinburgh
  • ISSN: 1755-6910
  • EISSN: 1755-6929
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