JAMA. 1894;XXII(25):941-943. doi:10.1001/jama.1894.02421040009002.
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THE NECESSITY OF A MYDRIATIC IN ESTIMATING ERRORS OF REFRACTION.  Read before the St. Louis Medical Society, April 14,1894.BY J. ELLIS JENNINGS, M.D.LATE CLINICAL ASSISTANT ROYAL LONDON OPHTHALMIC HOSPITAL; OPHTHALMIC AND AURAL SURGEON TO THE ST. LOUIS MULLANPHY HOSPITAL.There seems to be a tendency for the practice of ophthalmology to take a circular course in its search for higher development. We are making steady progress upward, but every now and then we find ourselves treading familiar paths; ground over which we had never expected totravel again.In the treatment of corneal ulcers we go from curette to cautery and from cautery to curette; from atropin to eserin and then back to atropin until one becomes confused. A learned London oculist gave expression to this uncertainty when he said to me: "First try atropin and if that don't work use eserin."The history of cataract extraction furnishes us


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