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October 14, 1911

The Introduction of the Ophthalmoscope into the United States

JAMA. 1911;LVII(16):1304. doi:10.1001/jama.1911.04260100130033

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Abstract

To the Editor:  —I wish to correct the statement with reference to the introduction of the ophthalmoscope into this country, made by Dr. A. D. Williams, of Bedford, Ind., in The Journal, July 29, 1911, p. 408. The credit is due neither to Dr. E. Williams, of Cincinnati, in 1855, nor to Dr. Herman Knapp, of New York, in 1868, but to Dr. Christopher Johnston, who on his return from a prolonged stay in Europe, early in 1854, brought the instrument back with him to this city. In a report made by him to the Medical and Chirurgical Faculty of Maryland, on June 7, 1854 (Transactions for 1854), he exhibited and described it. He had made himself thoroughly familiar with it by studies in Berlin, with von Graefe, and in Paris with Desmarres. Dr. Johnston's report is accompanied by two ophthalmoscopic drawings and it is "highly probable that the very

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