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Article
March 19, 1904

Eyestrain as a Cause of Headache and Other Nervous Symptoms—A Question of Precedence.

JAMA. 1904;XLII(12):782. doi:10.1001/jama.1904.02490570036017

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Abstract

Philadelphia, March 12, 1904.

To the Editor:  —Concerning the courteous note of Dr. A. L. Ranney, under the above heading in The Journal March 12, kindly permit me a few words of reply. I am conversant with the literature to which Dr. Ranney points, and it has always given me pleasure to emphasize the discoveries in medical science made by Americans.To Dr. Stevens and to Dr. Ranney credit is due for the first, continuous and indefatigable advocacy of the rôle of heterophoria in causing eyestrain and its reflexes. But my contention is a very different one. I believe that heterophoria has no influence or but little in causing eyestrain or the reflex ocular neuroses under discussion. In my writings, I have persistently advocated the view that tenotomy is not only unnecessary, but is really a prevention of cure. To me heterophoria is one of the results of eyestrain, and

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