In a paper read before the ophthalmologic congress in Vienna in August, 1921, I1gave an account of my first 30 iridencleises performed in private practice, as well as 27 cases of chronic glaucoma in which Elliot's trephining was done. All operations were performed in Drammen. The results of the iridencleises were investigated from twelve to seventy-five months after the operation. The effect of both methods seemed to be the same in regard to the relief from intra-ocular tension. Iridencleisis proved superior to Elliot's operation, however, in the preservation of vision and the field of vision. A demonstration of the operation before several members of the congress some days afterward at the Second University Ophthalmological Clinic led to the trial of the method there. Pillat gave an account of the results before the German Ophthalmological Congress in Heidelberg in 1927, and in a more detailed monograph