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April 1945


Author Affiliations

Lighting Research Laboratory, General Electric Company, Nela Park, Cleveland.

Arch Ophthalmol. 1945;33(4):316-317. doi:10.1001/archopht.1945.00890160070009

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To the Editor:  —In the January 1945 issue of the Archives, Dr. Legrand H. Hardy and Dr. Gertrude Rand present a paper entitled "Elementary Illumination for the Ophthalmologist." The scientific specification of foot candles, or intensity of illumination, has been one of the major objectives of researches in seeing for many years, and new knowledge and technics have crystallized in the past decade. The authors treat this important aspect meagerly. In fact, any one familiar with the growth of knowledge pertaining to the relations of illumination to the visibility of visual tasks and the complex relationships of light, vision and seeing knows that much of the progress in this direction has been made since 1931. The authors ignore this fact and quote Troland as of 1931 with a finality that is ridiculous. They might as well ignore the "miracle drugs" which have come into medical practice since that time and

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