Illustrated Encyclopedia of Human Anatomic Variation: Opus IV: Organ Systems
Ronald A. Bergman, PhD
Adel K. Afifi, MD, MS
Ryosuke Miyauchi, MD
Peer Review Status: Internally Peer Reviewed
There may be supernumerary (two to four) puncta.
Duplication of the canaliculus is rare (1:60,000). The puncta are occasionally imperforate. Diverticula of sinuses in the lacrimal duct may occur, or the nasolacrimal duct may be doubled.
Reference
Wolff, E. (1954) The Anatomy of the Eye and Orbit, 4th ed., Lewis, London.
Please send us comments by filling out our Comment Form.
All contents copyright © 1995-2012 the Author(s) and Michael P. D'Alessandro, M.D. All rights reserved.
"Anatomy Atlases", the Anatomy Atlases logo, and "A digital library of anatomy information" are all Trademarks of Michael P. D'Alessandro, M.D.
Anatomy Atlases is funded in whole by Michael P. D'Alessandro, M.D. Advertising is not accepted.
Your personal information remains confidential and is not sold, leased, or given to any third party be they reliable or not.
The information contained in Anatomy Atlases is not a substitute for the medical care and advice of your physician. There may be variations in treatment that your physician may recommend based on individual facts and circumstances.
URL: http://www.anatomyatlases.org/
This site complies with the HONcode standard for trustworthy health information:
verify here.