| Summary: | Dacryocystorhinostomy is a commonly performed procedure for nasolacrimal duct obstructions of several etiologies, of which syndromic CNLDO are the most difficult. Rare congenital anomalies like congenital partial arrhinia associated with complex CNLDO is a very significant challenge even for the experienced surgeons. This video elucidates fundamentals of managing obstructed lacrimal drainage system in this rare condition that will help the ophthalmology and otolaryngology surgeons. The video illustrates communicating the ipsilateral lacrimal sac with contralateral nasal cavity, due to the absence of ipsilaterally recognizable nasal structures. It discusses the use of very advanced techniques like stereotactic guidance for preoperative planning and intraoperative guidance. In addition, the video discusses the use of combined external and endoscopic approaches for treating this condition. It lucidly explains surgical tips to deal with such difficulties.
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