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International Ophthalmology

, Volume 38, Issue 6, pp 2463–2469 | Cite as

Morphology and morphometry of lacrimal drainage system in relation to bony landmarks in Caucasian adults: a cadaveric study

  • Mohammad Javed Ali
  • Martin Schicht
  • Friedrich Paulsen
Original Paper

Abstract

Purpose

The objective of this study is to examine the morphometry of the lacrimal drainage system with reference to bony landmarks in the vicinity.

Methods

Twenty midsaggitalized heads obtained from sixteen preserved cadavers were studied. Measurements involved detailed morphometry of anterior and posterior lacrimal crests, bony lacrimal sac fossa, entrance and length of the bony nasolacrimal duct (NLD), attachment of Horner’s muscle, and characteristics of the inferior meatal opening of the NLD.

Results

The mean lengths of anterior and posterior lacrimal crests were 16.3 and 12.5 mm, respectively. At the midpoint of the posterior lacrimal crest, Horner’s muscle was found to be attached at a mean of 1.3 mm posterior to the crest. The mean dimensions of the bony lacrimal sac fossa at superior, mid and inferior levels were 6.5, 8.7, and 5.9 mm, respectively. The mean contribution of the lacrimal bone to the lacrimal sac fossa was 56.2%. The mean anteroposterior and transverse diameters of the entrance of the bony NLD were 5.7 and 4.7 mm, respectively. The most common type of NLD opening in the inferior meatus was that of “vertical sulcus” (70%, 14/20). The mean distance of the NLD opening from the anterior nasal spine and Limen nasi were 22.2 and 18.9 mm, respectively.

Conclusion

This study provides useful anatomical and positional relationship of bony lacrimal landmarks and nasolacrimal duct in Caucasian adults.

Keywords

Anatomy Lacrimal Nose Cadaver Nasolacrimal duct 

Notes

Acknowledgements

The authors wish to acknowledge the technical help of Ms. Hong Nguyen during cadaveric dissections as well as the help of Mr. Thorsten Hummel for cadaver prearrangement. Mohammad Javed Ali received support from the Alexander von Humboldt Foundation for his research, and he also receives royalties from Springer for the textbook “Principles and Practice of Lacrimal Surgery.” Friedrich Paulsen was supported by Deutsche Forschungsgemeinschaft (DFG) Grants PA738/1-1 to 1-5 as well as PA738/2-1. He receives royalties from Elsevier for the anatomy atlas “Sobotta.”

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Springer Science+Business Media B.V. 2017

Authors and Affiliations

  • Mohammad Javed Ali
    • 1
    • 2
  • Martin Schicht
    • 2
  • Friedrich Paulsen
    • 2
  1. 1.Govindram Seksaria Institute of DacryologyL.V.Prasad Eye InstituteHyderabadIndia
  2. 2.Institute of AnatomyFriedrich-Alexander-University Erlangen-NürnbergErlangenGermany

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