[On the technical preconditions of using preserved graft for keratoplasty (author's transl)].

By the aid of the preserving solution that was mentioned by McCarey and Kaufman, the so-called MK-medium, it is possible to preserve human corneas up to six days. Now we inform about a method for gaining graft that permits the use of the rotor trephine with its already known advantages, such as low cutting pressure, low deformation of the tissue margines and the possibility of watching the cutting process.