Abstract
Within the last four or five years neurologists have given the study of nerve reflexes more extensive consideration, and justly so, since we have learned that nerve irritation in one part of the body will produce a train of symptoms in either a contiguous or even remote part, readily traceable to the nerve reflex as the exciting cause, and all treatment directed to other than the seat of the nerve irritation has proved a failure. Hack first called attention to certain abnormal conditions of the Schneiderian mucous membrane as aggravating causes of affections, the symptoms of which apparently located the trouble in neighboring parts. It was therefore only natural that, on account of the close anatomical relation of the two organs, the eye and the nose, ophthalmologists examined the latter for abnormal conditions which could locate there the probable cause of some, at least, of those affections of the former

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