IN STUDIES which my associates and I have carried out in the Corneal Research Laboratory in conjunction with corneal transplantation, several details in the technic of the operation have been evolved which we feel are worthy of presentation.
REPORT OF INVESTIGATION
Method of Cutting the Graft.
—The ideal method of cutting a corneal graft is one that would be completed with a sharp blade in one motion, without recourse to the use of scissors. Such a graft would always fit, without irregularities of the margin, and would involve a minimum of handling. Only a round graft could be cut in this manner, and this would best be done with a trephine.In our experience, the Green automatic spring-driven trephine fulfils these requirements. To date, we have cut over 300 grafts from rabbit and human eyes. In over 90 per cent of these the corneal disk has been excised completely with