Figure 3  .

Surgical technique. Transplanting the donor limbal ring. (A) The harvested ring of tissue carrying the "stem cells" is placed around the recipient limbus. A small arc of similar tissue, to fill the gap between the cut ends of the limbal ring, is cut to size and appropriately placed. (B) The limbal explants are sutured along both inner and outer circumferences using 10-0 nylon sutures. The sutures are placed directly opposite to each other. In this illustration a central penetrating keratoplasty is also shown.