Do both the upper and lower eyelids have a punctum?

The statement that both the upper and lower eyelids have a punctum is true. Each eyelid contains a punctum, which is a small opening that serves as the point of drainage for tears into the tear drainage system. Specifically, there are two puncta: one located on the upper eyelid and another on the lower eyelid. These puncta lead into the canaliculi, which then connect to the lacrimal sac and ultimately drain tears into the nose. Understanding the anatomy of the eyelids and their role in tear drainage is important for anyone working in optometry or ophthalmology, as it is essential for addressing issues related to tear production and drainage. This knowledge can assist technicians in recognizing and managing conditions such as dry eye syndrome or excessive tearing.