Lacrimal caruncle
Caruncula lacrimalis
Definition
The lacrimal caruncle is a small, pink, conical-shaped mucosal elevation, situated at the medial palpebral commissure. It lies medial to the plica semilunaris within the lacus lacrimalis. It represents a modified area of skin and conjunctiva.
Histology
Histologically, the lacrimal caruncle is covered by nonkeratinized stratified squamous epithelium and contains hair follicles, sebaceous glands, and sweat glands, resembling cutaneous tissue. Goblet cells and accessory lacrimal tissue may also be present.
Functions
Functionally, the lacrimal caruncle contributes to lubrication of the ocular surface through its glandular secretions and helps trap debris near the medial angle of the eye.
References
Standring, S. (Ed.). (2015). Eye (Chapter 42). In Gray's anatomy: The anatomical basis of clinical practice (41st ed., pp. ). Churchill Livingstone.
