After preparing the
graft bed, a donor cornea 0.25 mm larger in diameter than the
graft bed was obtained using a vacuum donor punch (Katena Products, Inc.
For strictures in the penile urethra or a compromised
graft bed a distal penile skin flap was found to be the most reliable approach.
Patch grafts in autoimmune disorders (rheumatoid arthritis, Mooren's ulcer) presented vascular ingrowths in
graft bed in over 50% of cases, commonly present in periphery.