What is the name of the triangular corners where the upper and lower lids meet?

The term used to describe the triangular corners where the upper and lower eyelids meet is "canthi." Each eye has an inner and outer canthus, which are the points where the eyelids come together. The canthi play a role in the overall anatomy of the eye area, and they are significant in various clinical assessments, such as examining eyelid health and positioning.

The other terms listed refer to different parts or functions of the eye. "Palpebrae" refers to the eyelids themselves, which guard the eyes and help with tear distribution and protection. "Meibomian glands" are sebaceous glands located within the eyelids that secrete oils to prevent tear evaporation. "Lacrimal puncta" are tiny openings on the inner corner of the eyelids that drain tears into the lacrimal sac. Understanding these distinctions is crucial for a comprehensive understanding of ocular anatomy and function.