1. The corner or angle of the eye where the upper and lower eyelids meet.
Usage: Anatomy term; commonly used in medical and scientific contexts.

Examples

• The doctor examined the inner canthus of the patient's eye.
• The outer canthus is where the eyelids form a natural fold.
• Tears drain from the inner canthus toward the nose.
• The medial canthus is closer to the bridge of the nose.
• An infection at the canthus can cause discomfort and redness.