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The importance of systematic examination of the color sense in seamen and railway employes is now so thoroughly recognized that it is perhaps commonly thought that all the requirements for the safety of life and property are met by the system now in vogue. The complete weeding out of all who show defects of color vision from these employments is the ideal of the ophthalmologists and of those who have made a specialty of this subject, like Dr. Jeffries, of Boston, and some others. Against them, however, there is sometimes raised a voice, for example, Drs. Dibble and Outten at the last meeting of the Association of Railway Surgeons, and Mr. F. Fergus, in a recent issue of the Glasgow Medical Journal. These objectors assert that there are cases that are rejected by the usual tests that are perfectly competent to meet all practical emergencies, and that any rigid tests
THE COLOR SENSE AND RAILWAY AND SEA SIGNALS. JAMA. 1895;XXV(17):722. doi:10.1001/jama.1895.04280430034006
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