A surgical procedure that creates an opening in the lacrimal sac (the tear duct sac) to treat blocked tear ducts.
From Greek 'dakryon' (tear), 'kystis' (sac), and 'tomē' (cutting). Medical terms combine Greek roots with '-tomy' (cutting) to describe surgical procedures.
Your tears don't just keep your eyes wet—they drain through tiny tubes into your nose, and when those ducts get blocked, doctors use a dacryocystotomy to create a new drainage path.
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