What is the inner canthus of the eye?

The inner canthus of the eye refers specifically to the fold of tissue at the inner corner of the eyelids. This anatomical feature serves as a critical landmark of the eye's structure, providing an important point of reference in both clinical assessments and various medical procedures. The inner canthus plays a role in the drainage of tears through the lacrimal system as it is closely associated with tear ducts and the proper functioning of the eye.

Understanding this structure is essential in fields such as ophthalmology and dental hygiene, particularly when considering the potential impact of oral health on the eyes and facial structures. The anatomical precision in identifying regions such as the inner canthus can help professionals communicate effectively about the ocular region either in patient assessments or in interdisciplinary health discussions.

The outer corner of the eyelid refers to a different part of the eyelid, and the area between the eyeball and eyelid is typically characterized by the conjunctiva rather than a specific junction or fold. Similarly, the region around the eyelashes would not specifically denote the anatomical features related to the canthus, as that pertains to the eyelash fringe rather than the corners of the eyelids.