Advances in Anatomy, Embryology and Cell Biology

The Human Nasolacrimal Ducts

Authors: Paulsen, Friedrich

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About this book

The human nasolacrimal ducts are a borderland of both disciplines opthalmology and otorhinolaryngology which work closely together in the tretament of nasolacrimal disorders. The author summarizes recent advances about the nasolacrimal ducts and discusses them in a context with nasolacrimal duct pathophysiology. As a draining and secretory system  the nasolacrimal ducts play a role in tear transport and non-specific immune defense. Moreover, components of tear fluid are absorbed in the nasolacrimal passage and are transported into a surrounding vascular system. This system is comparable to a cavernous body which is subject to vegetative control. Organized mucosa-associated lymphoid tissue (MALT) is present in the nasolacrimal ducts displaying the cytomorphological and immunophenotypic features of MALT. The normally constant  absorption of tear fluid components into the blood vessels of the surrounding cavernous body  that are connected to the blood vessels of the outer eye could be a feedback signal for tear fluid production, which comes to a halt if these tear components are not absorbed. Thus, dry eye could be initiated. Defective stimulation of tear duct-associated lymphoid tissue could result in abnormal immune deviation at the ocular surface leading to an autoimmunological response that causes dry eye pathology. Moreover, malfunctions in the cavernous body and in its innervation may lead to disturbances in the tear outflow cycle, ocular congestions or total occlusion of the lacrimal passage. Based on the findings the pathomechanism of primary acquired dacryostenosis can be explained.  

Table of contents (6 chapters)

Buy this book

eBook $129.00
price for USA (gross)
  • ISBN 978-3-642-55643-2
  • Digitally watermarked, DRM-free
  • Included format: PDF
  • ebooks can be used on all reading devices
  • Immediate eBook download after purchase
Softcover $169.00
price for USA
  • ISBN 978-3-540-44076-5
  • Free shipping for individuals worldwide
  • Usually dispatched within 3 to 5 business days.
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Bibliographic Information

Bibliographic Information
Book Title
The Human Nasolacrimal Ducts
Authors
Series Title
Advances in Anatomy, Embryology and Cell Biology
Series Volume
170
Copyright
2003
Publisher
Springer-Verlag Berlin Heidelberg
Copyright Holder
Springer-Verlag Berlin Heidelberg
eBook ISBN
978-3-642-55643-2
DOI
10.1007/978-3-642-55643-2
Softcover ISBN
978-3-540-44076-5
Series ISSN
0301-5556
Edition Number
1
Number of Pages
XII, 106
Number of Illustrations and Tables
99 b/w illustrations, 1 illustrations in colour
Topics