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