LACRIMAL PUNCTUM


Near the medial commissure of each eye are pores called the lacrimal punctum. These pores form the opening to a lacrimal canal that leads to the lacrimal sac, located in the medial wall of each orbit. It is in this sac that tears collect and drain into the nasolacrimal duct, and subsequently into the inferior meatus of the nasal cavity. The next time you cry a great deal (hopefully tears of joy) you may notice a runny nose—those are tears draining into your nasal cavity.
 

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