Systematic Reviews
Copyright ©The Author(s) 2025.
World J Clin Cases. Oct 16, 2025; 13(29): 108046
Published online Oct 16, 2025. doi: 10.12998/wjcc.v13.i29.108046
Table 1 Gross histology of the lacrimal drainage system
Anterior segment structure
Histological appearance
Description
Lacrimal canaliculiStratified, non-keratinized squamous epitheliumSuperior and inferior canals commencing from the nasal punctal orifices to the lacrimal sac
Lacrimal sacPseudostratified ciliated columnar epithelium and goblet cellsDilated portion of the lacrimal fluid drainage system
Nasolacrimal ductPseudostratified ciliated columnar epithelium Drains tear fluid toward the inferior meatus of the nasal cavity