RT Journal T1 INvestigations sur le glaucome (essais) JF Journal of the American Medical Association JO Journal of the American Medical Association YR 1939 FD October 7 VO 113 IS 15 SP 1437 OP 1437 DO 10.1001/jama.1939.02800400065033 UL http://dx.doi.org/10.1001/jama.1939.02800400065033 AB For the past ten years Fortin has published in the Argentine and Spanish journals articles having to do with the maintenance of intra-ocular pressure. He has been interested in glaucoma especially from an anatomic point of view. The present pamphlet includes many beautiful illustrations of the iris angle and its environs, together with theories as to the production of glaucoma. Fortin believes that aqueous is evacuated from the anterior chamber by the action of the ciliary muscle sliding forward on the sclera. When the lens bulges forward in accommodation, additional space is needed and the aqueous is drained as the canal of Schlemm becomes more patulous. The action of the muscle of the ciliary body is compared to the heart action on the blood stream. Flaccidity of this muscle may cause glaucoma. The enlarged pupil of glaucoma is due likewise to a flaccid muscle, as the pupillary and the ciliary