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Clinical Notes, Suggestions and New Instruments

JAMA. 1946;130(12):786-787. doi:10.1001/jama.1946.02870120032007.
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THE EFFECT OF ATABRINE SUPPRESSIVE THERAPY ON EYESIGHT IN PILOTS  COLONEL E. A. ABBEY and MAJOR E. A. LAWRENCEMedical Corps, Army of the United StatesIn order to determine the effect of continued doses of atabrine on visual acuity, 1,127 pilots from the Air Transport Command were tested. None of these pilots had ever worn glasses; they were tested during their active tour of duty, which involved flying from India or Assam bases to China across the Himalayan mountains—the so-called Hump. The problem of vision is of singular interest in this type of flying, which is probably the most hazardous of any in the world; treacherous mountains and an ever changing atmosphere which requires a great amount of instrument flying keep the pilot constantly alert and obviously require an absolutely faultless vision.Every pilot is required to pass the physical examination for flying status, the so-called 64 examination, at


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