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The CO2 laser and electrosurgery both produce greater focal tissue damage in incisional and ablative applications than the other modalities. Delayed epithelialization of the wound occurs with both modalities in incisional wounds but only with electrosurgery in ablative wounds. At 6 weeks, the appearance of the scar in all incisional and ablative modalities is similar grossly and histologically. Confirmation of these findings requires standardization of power density of the CO2 laser in incision and ablation.

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The technology of using a metal ferrule at the junction of the standard Crawford probe and a larger silicone tube was successful in creating a Crawford system with greater dilation capability than the standard Crawford system. The technique of probing and intubation with this larger Crawford system may be a simple alternative to open revision of a failed dacryocystorhinostomy procedure.

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