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The lacrimal punctum (plural puncta) or lacrimal point, is a minute opening on the summits of the lacrimal papillae, seen on the margins of the eyelids at the lateral extremity of the lacrimal lake. There are two lacrimal puncta in the medial (inside) portion of each eyelid.
Together, they function to collect tears produced by the lacrimal glands. The fluid is conveyed through the lacrimal canaliculi to the lacrimal sac, and thence via the nasolacrimal duct to the inferior nasal meatus of the nasal passage.
Video Lacrimal punctum
Additional images
Maps Lacrimal punctum
See also
- Imperforate lacrimal punctum
- Lacrimal apparatus
- Punctal plug
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References
This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)
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External links
- Diagram and discussion at aafp.org
Source of the article : Wikipedia
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