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April 1937


Arch Ophthalmol. 1937;17(4):715-716. doi:10.1001/archopht.1937.00850040151014

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To the Editor:—1 venture to call the attention of the ophthalmologic bodies to the desirability of appointing a committee on ophthalmologic nomenclature. Such a committee should go into the subject thoroughly and standardize and simplify many of the ophthalmologic terms which are at present used loosely or incorrectly.

To mention one term, let prism diopter be considered. As every one knows, the unit and the term were coined by Mr. Charles F. Prentice. Both have long been adopted by all the American manufacturers, who for several decades have been grinding their prisms and calculating all decentrations of lenses in terms of the prism diopter. Still many published articles continue to speak of prisms in degrees, and many a prescription is written for a prism of, say, 2 degrees. It is safe to state that the prism used in the test was a prism of 2 prism

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