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Editorial
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There is probably no more exquisite a demonstration of anatomical arrangements and the physiological properties of conduction through myelinated axons than the slowing of adduction on attempted horizontal gaze, with preserved convergence, seen in a case of posterior internuclear ophthalmoplegia. This and many other aspects of normal and abnormal eye movements were summarized by David Cogan in his definitive 20th century monograph on the Neurology of the Ocular Muscles (1948). On March 20, 1823, Sir Charles Bell read a paper to the Royal Society entitled The motions of the eye etc., concluding with a second account of The nerves of the orbit on June 19. Bell described the pulleys and strings by which cranial nerves move the orbits.
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