Our readers are no doubt aware that up to this time great emphasis has been placed on the Bárány equilibrium tests in connection with the examination of aviators. Already, however, there seems to be developing a reaction against assigning too great importance to these tests.
As Fridenberg1 recently said: "It has been generally assumed that a normal labyrinth is the sine qua non and the only essential for equilibration." As he points out also, while nothing has been said about vision in its relation to flying, the questions of hypersensitiveness to bright light, the sureness of the sense of motion, the acuity of vision in lowered illumination, the appreciation of contrast in form, color and light, a rapid and accurate judgment of distance, direction and size and depending on all of these, pace, are an "interesting and practical problem." A further evidence is the finding of Assistant Surgeons Parsons
THE BÁRÁNY TESTS IN THE EXAMINATION OF AVIATORS. JAMA. 1918;70(15):1096–1097. doi:https://doi.org/10.1001/jama.1918.02600150050010
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