Fig. 5 Dacryocystorhinostomy (DCR) with Silastic tubing in the patient shown in Figure 2, now aged 6½ weeks. The procedure was done for medically uncontrollable dacryocystitis that was unresponsive to bedside probings. If too much methylene blue is irrigated into the lacrimal sac preoperatively as a label for the mucosal lining, when the sac is opened, it will stain the surrounding soft tissues as shown here.