Disturbances of the motility of the eyes due to functional neuroses and hysteria require consideration not only because of their importance in the making of a differential diagnosis, but also in order to clear up the many misunderstandings and contradictions found in the interpretations that have been given by various authors. Whether or not purely functional paralysis of ocular muscles occurs remains to this day a moot point. Even Uhthoff,1 while refusing, like so many ophthalmologists and neurologists, to accept hysteria as a cause of the paralysis, has, strange to say, referred in his writings to "publications which affirm beyond doubt the exceptional occurrence of hysterical paralyses of even individual muscles of the eye."
Nevertheless, I think that one is not only entitled but indeed obliged to doubt the reliability of the observations reported as instances of purely hysterical paralysis. To the best of my knowledge, the investiga
BIELSCHOWSKY A. LECTURES ON MOTOR ANOMALIES OF THE EYES: IV. FUNCTIONAL NEUROSES: ETIOLOGY, PROGNOSIS AND TREATMENT OF OCULAR PARALYSIS. Arch Ophthalmol. 1935;13(5):751–770. doi:10.1001/archopht.1935.00840050029003
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