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June 4, 1938


Author Affiliations

San Francisco

JAMA. 1938;110(23):1915. doi:10.1001/jama.1938.62790230003011b

The following is the preliminary report of a surgical procedure for primary chronic glaucoma of the shallow chamber type:

According to recent microgonioscopic and surgical investigations1 primary glaucoma may, with few exceptions, be divided into two main anatomic types according to the mechanical cause of the increased intra-ocular pressure. One type is characterized by normal or deep chamber and open iridic angle. In this the increased pressure is caused by blockage of the sclerocorneal trabeculum, and a rational operation, "goniotomy," has been suggested for its relief.2 The second type is characterized by a shallow chamber and is produced by obstruction of the filtration angle by the root of the iris. An operative procedure for its relief is presented herewith. This procedure may be employed as an early or prophylactic operation or it may be employed, with safety and without complicating sequelae, for the relief of those cases in