The experiments and operations described are offered as potential only in their application to relieve intra-ocular hypertension. The surgical technic is not difficult, and, although I have resorted to this procedure clinically in but three eyes (two cases), the favorable results to date lead me to offer this preliminary report.
The possibility of establishing a fistulous tract from the anterior chamber through the suprachoroidal space and out through the sclera, for the control of intra-ocular hypertension, first occurred to me on Dec. 1, 1933. At that time, working with fresh pigs' eyes, I inserted flat, gold strips in a number of these eyes through the sclera in much the same way that a spatula is inserted in performing cyclodialysis. The conception was that by leaving the metal strip in the tract the superabundant aqueous could find its escape through the channel into the suprachoroidal space, with some absorption taking