What surgical procedure constructs new tear drainage from the lacrimal sac into the nose?

The procedure that constructs new tear drainage from the lacrimal sac into the nose is Dacryocystorhinostomy (DCR). This surgery is performed to alleviate symptoms of obstructed tear drainage caused by blockages in the nasolacrimal duct.

During a DCR, the surgeon creates a new passageway for tears to drain from the lacrimal sac directly into the nasal cavity, bypassing the obstruction. This is crucial for restoring the normal drainage of tears and preventing excessive tearing, which is often a result of the blockage.

In contrast, canaliculoplasty is a procedure to reconstruct or open the canaliculus, which is the small duct that drains tears from the eye into the lacrimal sac, but it does not involve direct drainage into the nose. Punctoplasty refers to a procedure that involves opening the punctum, the small opening on the eyelid margin through which tears drain, but like canaliculoplasty, it does not create a new drainage pathway into the nasal cavity. Blepharoplasty is a surgery to correct eyelid issues, such as removing excess skin or fat, and does not relate to tear drainage pathways at all.

Thus, Dacryocystorhinostomy