ISSN: 2459 - 1777 | E-ISSN 2587-0394
Volume: 4
Issue: 1
Year: 2019
Anatomical Parameters of Nasolacrimal Duct Evaluated by Computed Tomography in Healthy Children [Beyoglu Eye J]
Beyoglu Eye J. Ahead of Print: BEJ-83997 | DOI: 10.14744/bej.2019.83997  

Anatomical Parameters of Nasolacrimal Duct Evaluated by Computed Tomography in Healthy Children

Hasan Altınkaynak1, Hasan GÜNEŞ2
1Midyat State Hospital, Department of Ophthalmology, Mardin, Turkey
2Tuzla State Hospital, Department Of Opthalmology, Istanbul, Turkey

INTRODUCTION: To evaluate the anatomic parameters at different levels of bone nasolacrimal duct (NLD) with computed tomography (CT) in healthy children with different age groups.
METHODS: We retrospectively evaluated bone NLD CT imaging of 289 patients aged between 0-15 who were admitted to the emergency department because of various indications and who underwented brain CT. The anterior-posterior and transverse diameters at the inferior orbital margin level, the narrowest diameter along with NLD, NLD length and angle degree were recorded at the CT imaging of cases.
RESULTS: The cases of the anterior- posterior and transverse diameters at the inferior orbital margin level and NLD length at the sagittal CT imaging were showed statistically significant increase in a group of patients older than five years (p <0.05). While the narrowest diameter along NLD showed an increase from the age of 3 years, this increase was not statistically significant (p = 0.25). The degree of the angle between the line connecting distal and proximal ends of the NLD and the line drawn parallel to the nasal floor did not change significantly between the groups (p> 0.05).
DISCUSSION AND CONCLUSION: We found increase with age increase in anterior-posterior diameter, transverse diameter, the narrowest diameter along with NLD, and NLD length. In our study, the NLD anatomical parameters that we found in healthy children may be a guide in determining the location of NLD and in selecting surgical instruments of appropriate size and diameter before NLD surgery.

Keywords: Nasolacrimal duct, computed tomography, children, diameter




Corresponding Author: Hasan Altınkaynak, Türkiye


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