The association of blepharitis and ametropia with analysis of one hundred cases / by Ernest Clarke.

  • Clarke, Ernest, 1857-1932.
Date:
[1894]
Catalogue details

Licence: Public Domain Mark

Credit: The association of blepharitis and ametropia with analysis of one hundred cases / by Ernest Clarke. 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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    as dust or smoke, causes a spreading of the inflamma- tion to the conjunctiva. The worse form of blepharitis, so common among the children of the poor, called eczema tarsi or sycosis, often begins with an attack of phlyctenular ophthalmia ; the patients are generally strumous and dirty, which con- ditions are often considered to be the real cause of the disease, but all such cases I have examined were ametropic, and although the constitutional tendency to eczema, &c, and the uncleanliness may materially feed the disease, I believe the asthenopia causes the eyes to be attacked in the first instance. Analysis of the 100 cases.—Cases not picked. In all the disease had lasted over a year, in many all the life. They were all placed under the influence of a mydriatic. Atropine was used for those under 20, and homatropine and cocaine for those over 20. Taking ametropia to signify a refraction of more than a quarter of a dioptre of astigmatism, any myopia, and more than one dioptre of hypermetropia, i.e., taking it in its broadest sense, every one of the 100 patients was ametropic. Refraction of the 200 Eyes. Hypermetropia ... ... ... 64 Hypermetropic astigmatism... ... 96 Mixed astigmatism ... ... ... 8 Myopia 5 Myopic astigmatism .. ... ... 26 Emmetropia ... ... ... ... 1 200 Note that in 168 eyes {i.e., 84 per cent., hyperme- tropia existed in some form. Out of the 200 eyes 194 were either hypermetropic or astigmatic (giving rise to accommodative asthenopia). The two cases of myopia