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The choice of round versus square corneal grafts for use in partial penetrating keratoplasty has been resolved by some authors in favor of the square type because of the facility of excision of the square graft with the straight-bladed scissors. I felt, however, that the ease of outlining a round graft and its superior cosmetic properties were worth consideration and devised a pair of scissors which were curved to the diameter of the round graft. These scissors made the completion of the trephine incision much easier than it had been heretofore. The most recent model of these scissors is fashioned after Castroviejo's straight keratoplasty scissors. They are made up of right-handed and lefthanded curves, so that the operator need not move his position from the head of the table, and in a 5, 6 or 7 mm. diameter curve, depending on the size of the trephine used. They have been
KATZIN HM. IMPROVED SCISSORS FOR CORNEAL GRAFTING. Arch Ophthalmol. 1947;38(6):832-833. doi:10.1001/archopht.1947.00900010855010