The Aero Medical Association met at Royal York Hotel and R. C. A. F. Institute of Aviation Medicine, Toronto, Canada, June 16-18, 1948. Among the papers presented that of E. E. Poos, Detroit, pointed out that certain ocular symptoms, such as blurring, burning, light flashes, photophobia, vertigo, amaurosis fugax, disturbances of muscles, accommodation, convergence, migraine, glaucoma and central angiospastic retinopathy are frequently of psychosomatic origin, reflecting ocular symptoms of certain conversion syndromes. Among these may be mentioned guilt, conflict, fear, pain, indecisiveness, feelings of inferiority and fatigue reactions.
Ryan and his associates at the R. C. A. F. Institute of Aviation Medicine, Toronto, reported physiologic findings in normal men subjected to negative G.1 The outstanding symptoms under negative G and the limiting symptom by which the subject decides that his safe G tolerance is reached is pressure in the head region. Visual symptoms commonly include blurring, graying and more
THE AERO MEDICAL ASSOCIATION. JAMA. 1948;138(6):433–434. doi:10.1001/jama.1948.02900060037013
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