The eye as an aid in general diagnosis : a hand-book for the use of students and general practitioners / by E. H. Linnell.

  • Linnell, E. H.
Date:
1897
Catalogue details

Licence: Public Domain Mark

Credit: The eye as an aid in general diagnosis : a hand-book for the use of students and general practitioners / by E. H. Linnell. Source: Wellcome Collection.

Provider: This material has been provided by UCL Library Services. The original may be consulted at UCL (University College London)

    82/272 (page 76)
    that we find the characteristic feature to be that of re- flex iridoplegia in the full meaning of the term, that is, a faihire of all pupillary reflexes, and this condition serves as a valuable point in differential diagnosis be- tween true tabes and the multiple neuritis (of alcoholic origin, usually) which so closely simulates it, for in the latter there is an absence of myosis and reflex irido- plegia. In tabes, the reaction to light generally fails flrst. Knies says: Absence of pupillary reaction to light, which is followed by loss of reaction to accom- modation and to convergence and to cutaneous irritants, is one of the most characteristic signs of impending or beginning tabes, and forms an integral part of the fur- ther clinical history of the disease. The presence of oculo-pupillary and vaso-motor symptoms of paresis or irritation are important in an accurate local diagnosis in injuries of the spine. Almost ■every severe spinal injury is attended with vaso-motor paralysis and rise of temperature upon the side of the motor paralysis. The presence of myosis and iridoplegia with coma of syphilitic origin, enables us to differentiate it from a similar condition due to uraemia or alcoholism in which there is mydriasis. It is hardly necessary to mention the extreme myosis which occurs in opium poisoning. The absence of myosis would be a counter- indication in suspected acute poisoning, but it is