Use of Echothiophate (Phospholine Iodide†) in the Treatment of Glaucoma* *From the Glaucoma Consultation Service, Massachusetts Eye and Ear Infirmary. A portion of this paper was presented at the Massachusetts Eye and Ear Infirmary Alumni Meeting, April 16, 1958, Boston. †Echothiophate is the A.M.A. generic name for 2-diethoxyphosphinyl-thioethyltrimethyl ammonium iodide (217-Methyl Iodide). The Campbell Pharmaceutical Company, New York, New York, provided the echothiophate (trade name, Phospholine Iodide) used in this study.