Springer Nature medical video. Endoscopic-assisted probing in congenital nasolacrimal duct obstruction

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Summary

This video explains that congenital nasolacrimal duct obstruction (CNLDO) is the most common cause of epiphora in infants. It occurs due to the failure of canalization of the distal end of the naso...

This video explains that congenital nasolacrimal duct obstruction (CNLDO) is the most common cause of epiphora in infants. It occurs due to the failure of canalization of the distal end of the nasolacrimal duct (NLD). Spontaneous resolution occurs in more than 90% during the first 12 months of life in most children. Surgical intervention is required in cases where the accidental opening of the membrane fails. Conventional probing is usually the most common mode of intervention. However, it carries the risk of false passage and failure as it is a blind procedure that mainly depends on the surgeon's tactile sensation during probing1. Probing the nasolacrimal system under endoscopic guidance allows direct visualization of the distal nasolacrimal duct. It thus helps increase the procedure's success rate compared to blind probing1. This video has four surgical procedures describing step-wise recanalization details in CNLDO. These include probing in a thin membranous obstruction of NLD, probing for a thick membranous obstruction of NLD, buried probe, and marsupialization of the nasal cystic compartment of congenital dacryocystocele. Nasal endoscopic assisted probing has a definite advantage over conventional probing. A success rate of 95.7% has been reported with endoscope-assisted probing against 75.9% in traditional probing group1. Therefore, it is a valuable video for pediatric ophthalmologists, ophthalmic plastic surgeons, and otorhinolaryngologists who see these patients in their practice and need to do these procedures.

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