Lacrimal Sac, Classified within the Orbital Tissue

Jonnah Kristina Teope; Hirohiko Kakizaki; Yasuhiro Takahashi; Munekazu Naito

doi:10.1080/08820538.2024.2322440

Lacrimal Sac, Classified within the Orbital Tissue

Semin Ophthalmol. 2024 Feb 26:1-3. doi: 10.1080/08820538.2024.2322440. Online ahead of print.

Authors

Jonnah Kristina Teope¹, Hirohiko Kakizaki¹, Yasuhiro Takahashi¹, Munekazu Naito²

Affiliations

¹ Department of Oculoplastic, Orbital & Lacrimal Surgery, Aichi Medical University Hospital, Nagakute, Aichi, Japan.
² Department of Anatomy, Aichi Medical University, Nagakute, Aichi, Japan.

PMID: 38409659
DOI: 10.1080/08820538.2024.2322440

Abstract

Purpose: To disclose that the lacrimal sac is classified within the orbital tissue.

Materials and methods: Ten orbits of 9 Japanese cadavers aged 64 to 85 years at death were included. The attachment site of the orbital septum in the medial canthal area was grossly dissected. The relationship between the orbital septum attachment site and the location of the lacrimal sac was examined.

Results: In the upper region, the orbital septum was attached to the most superior area of the lacrimal fossa and the medial canthal tendon. In the lower region, the septum was attached to the anterior lacrimal crest and the medial canthal tendon. In both the upper and lower regions, none of the septa attached to the posterior lacrimal crest. The lacrimal sac was situated behind the orbital septum.

Conclusion: The lacrimal sac, which is situated behind the orbital septum, is classified within the orbital tissue.

Keywords: Anterior lacrimal crest; lacrimal sac; medial canthus; orbital septum; orbital tissue.

Plain language summary

The lacrimal sac, which is situated behind the orbital septum attaching to the anterior lacrimal crest and the medial canthal tendon, is classified within the orbital tissue.