Eyestrain (commonly called asthenopia) / by Ernest Clarke.

Ernest Clarke

Date:: 1892

Credit: Eyestrain (commonly called asthenopia) / by Ernest Clarke. Source: Wellcome Collection.

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$cholia and other nervous diseases by correcting the ocular defect, and so removing the eyestrain.^ Colburn ^ relates the case of a man, aged 24, who had been unsuccessfully treated for petit mal. He had manifest H =.50. and latent H= + 2 D, and insufficiency of the external recti. The latter was overcome by exercise with prisms, and + 2 D. glasses were ordered for constant use, with the result that the epilepsy was cured. At the June meeting of the American Medical Associa- tion, 1887, Frothingham and others reported cases of epilepsy cured by the relief of eyestrain. Frothingham's case was a woman, aged 24, who had suffered from epilepsy since the age of 11. She was found to have hyperopia of 2 D,, and glasses of + 1.5 D. were given her to wear constantly, with the result that the seizures were entirely checked, the cure having lasted two years.^ Fulton reports three cases of chorea in children, confined to the muscles of the lids and face, caused by strain of the external muscles of the eye, in which correction of the refractive trouble, with tenotomy of one or other of the recti completely relieved the sufferers.^ Gould has reported under the heading of Reflex Neuroses due to Eyestrain one case of chorea of several years' duration, one case of dyspepsia (!) of twenty years' standing, cured, and a case of cardiac palpitation relieved by glasses.^ On the other hand, Allen Starr, in a paper on The Relation between Peripheral Irritation and Nervous Phe- ' Knapp, Arch, of Oph., vol. xvii., p. 105, and New York Med. Journal, June 11 and 18, 1892. ^ Knapp, Arch, of Oph., vol. xviii., p. 118. ' Oph. Rev., vol. vi., p. 245. ■* Ai7ierican Journal of Opjh., vol. vii., p. 26. Knapp, Arch, of Oph., vol. xix., p. 107.$

Eyestrain (commonly called asthenopia) / by Ernest Clarke.

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