On some forms of headache / by R. H. Elliot.

  • Elliot, Robert Henry, 1864-1936.
Date:
[1907]
Catalogue details

Licence: In copyright

Credit: On some forms of headache / by R. H. Elliot. 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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    r, qiiently meet with men find women who regard themselves as always having had excellent sight and who find it hard to believe that their eyes are alone responsible for all the misery they have been suffering. Long service in India, prolonged lactation, the too rapid bearing of* children, a long course of malaria, a severe operation, or any similar cause of debilitation may be the first factor in awaking a trouble whose course may easily be lifelong, unless effectively dealt with. The point to which I have been leading up, is that a harmonious relationship must be main- tained between the reflex actions of accommoda- tion and convergence. It is possible for this t<> be disturbed on either side. The state of the refraction may be such that an undue or an overdue effort of accommodation may be called for; whilst on the other hand the extrinsic mus- culature mav, owing to a fault in innervation or in the state of one or more of the muscles, be unequal to the necessary exertion or may over- exert itself, when called into action. All that is present may be a tendency to abnormal devia- tion of the optic axes. This tendency may be suppressed by a farther muscular effort, and may remain only a tendency, whilst at the same time giving rise to asthenopia symptoms of considerable gravity. By the Maddox Rod test, by the aid of Stevens' phorometer, or by still other means it is possible to convert the ten- dency to deviation into an actual deviation, to ascertain its precise nature and to measure its amount. To the conditions we are discussing Stevens gave the name of Heterophoria. Others have spoken of it as 'suppressed squint.' The latter term is good enough so long as we remember e—2