Photo demonstrates the importance of using cautery to destroy the surrounding epithelial tissue.

Photo demonstrates the use of a 10.0 nylon mattress suture for stabilization of the tube to the globe.

Photo demonstrates a partial thickness piece of donor corneal tissue secured over the tube, protecting the tube from repeat erosion.

Photo demonstrates the pedicle flap after it has been created. The black arrow represents the base of the flap. The white arrow points to the distal tip of the flap, which will later be sutured into place.

Photo demonstrates the distal part of the flap being moved into position over the previously placed corneal patch graft.

Photo demonstrates the distal end of the pedicle flap sutured into position.

Photo demonstrates tube erosion. Note the previous scarred trabeculectomy site at 12 o’clock and the tube erosion in the superior-temporal quadrant.

Slit lamp photograph of the pedicle flap on postoperative day 1.

Slit lamp photograph of the pedicle flap on postoperative year 1. Note that the pedicle flap is flat. A symblepharon has not formed. Note the healthy vasculature that has been transfer to the area.