Effect of Phospholine Iodide On Blood Cholinesterase Levels of Normal And Glaucoma Subjects* *From the Departments of Ophthalmology and Neurology, College of Physicians and Surgeons, Columbia University, and the Institute of Ophthalmology, Presbyterian Hospital. This work was supported by the Division of Research Grants and Fellowships, U.S. Public Health Service, Grants NB-03304 and 1-SO1-FR-05395, and by Research Career Development Award No. 1-K3-NB-21,862 (Dr. Rosenberg) from the National Institute of Neurological Diseases and Blindness, U.S. Public Health Service.