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Course of the vertical portion of the lower lacrimal canaliculus
The nomenclature of each part of the lacrimal canaliculus, for example the vertical portion, does not always reflect the true course. Since we have sometimes observed findings suggesting the so called vertical portion of the lower lacrimal canaliculus inclined laterally, we re-examined the course of...
Autores principales: | , , , , , |
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Formato: | Texto |
Lenguaje: | English |
Publicado: |
Dove Medical Press
2008
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2699807/ https://www.ncbi.nlm.nih.gov/pubmed/19668426 |
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author | Kakizaki, Hirohiko Takahashi, Yasuhiro Nakano, Takashi Asamoto, Ken Kinoshita, Shinsuke Iwaki, Masayoshi |
author_facet | Kakizaki, Hirohiko Takahashi, Yasuhiro Nakano, Takashi Asamoto, Ken Kinoshita, Shinsuke Iwaki, Masayoshi |
author_sort | Kakizaki, Hirohiko |
collection | PubMed |
description | The nomenclature of each part of the lacrimal canaliculus, for example the vertical portion, does not always reflect the true course. Since we have sometimes observed findings suggesting the so called vertical portion of the lower lacrimal canaliculus inclined laterally, we re-examined the course of the vertical portion. Twenty-eight postmortem lower eyelids in 16 Japanese were examined and divided into 2 groups. The first group was 14 lower eyelids of 7 cadavers. Eyelids were incised sagittally from the lower lacrimal punctum. The second group was 14 lower eyelids of 9 cadavers; these were incised from the lower lacrimal punctum with 5 degrees lateral inclination to the sagittal plane. In the first group, 10 canaliculi of 7 cadavers were interrupted at the halfway point of the vertical portion. Four canaliculi of 4 cadavers included the whole length of the vertical portion. In the second group, all specimens included the whole length of the vertical portion. Most vertical portions of the lower lacrimal canaliculus demonstrated a laterally inclined course of approximately 5 degrees, although some took a completely vertical course. |
format | Text |
id | pubmed-2699807 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2008 |
publisher | Dove Medical Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-26998072009-08-10 Course of the vertical portion of the lower lacrimal canaliculus Kakizaki, Hirohiko Takahashi, Yasuhiro Nakano, Takashi Asamoto, Ken Kinoshita, Shinsuke Iwaki, Masayoshi Clin Ophthalmol Original Research The nomenclature of each part of the lacrimal canaliculus, for example the vertical portion, does not always reflect the true course. Since we have sometimes observed findings suggesting the so called vertical portion of the lower lacrimal canaliculus inclined laterally, we re-examined the course of the vertical portion. Twenty-eight postmortem lower eyelids in 16 Japanese were examined and divided into 2 groups. The first group was 14 lower eyelids of 7 cadavers. Eyelids were incised sagittally from the lower lacrimal punctum. The second group was 14 lower eyelids of 9 cadavers; these were incised from the lower lacrimal punctum with 5 degrees lateral inclination to the sagittal plane. In the first group, 10 canaliculi of 7 cadavers were interrupted at the halfway point of the vertical portion. Four canaliculi of 4 cadavers included the whole length of the vertical portion. In the second group, all specimens included the whole length of the vertical portion. Most vertical portions of the lower lacrimal canaliculus demonstrated a laterally inclined course of approximately 5 degrees, although some took a completely vertical course. Dove Medical Press 2008-12 2008-12 /pmc/articles/PMC2699807/ /pubmed/19668426 Text en © 2008 Kakizaki et al, publisher and licensee Dove Medical Press Ltd. This is an Open Access article which permits unrestricted noncommercial use, provided the original work is properly cited. |
spellingShingle | Original Research Kakizaki, Hirohiko Takahashi, Yasuhiro Nakano, Takashi Asamoto, Ken Kinoshita, Shinsuke Iwaki, Masayoshi Course of the vertical portion of the lower lacrimal canaliculus |
title | Course of the vertical portion of the lower lacrimal canaliculus |
title_full | Course of the vertical portion of the lower lacrimal canaliculus |
title_fullStr | Course of the vertical portion of the lower lacrimal canaliculus |
title_full_unstemmed | Course of the vertical portion of the lower lacrimal canaliculus |
title_short | Course of the vertical portion of the lower lacrimal canaliculus |
title_sort | course of the vertical portion of the lower lacrimal canaliculus |
topic | Original Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2699807/ https://www.ncbi.nlm.nih.gov/pubmed/19668426 |
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