A review of the textbooks of only a few years ago showed that results of corneal transplantation were as discouraging as those obtained with the treatment of retinal detachment. In the past few years progress in the surgical treatment of retinal detachment has led to favorable results in detachments such as were heretofore considered incurable. Likewise, improvements in the technic of corneal transplantation in recent years have made it possible for a good many unfortunate persons who were doomed to permanent blindness from corneal scars to regain vision. The reports of Elschnig, Filatov, Thomas, Friede, Strakhov, Rycroft, Wright, Wasjutinskij, Sterenberg, Nazarov, Towbin, Feldman, Franceschetti and Streiff, Stallard, Kirwan, Nižetic, Ochi, Majewski and myself suggest that although there may be still a great deal of improvement to be made in this field of ophthalmic surgery, the results already obtained by many surgeons are consistently good enough to justify the inclusion of