A small aperture, the lachrymal punctum, is located in a slight tissue promotion, the lacrimal papilla, at the junction of the lachrymal and ciliary helpings of the eyelid boundary. Both upper and lower lids have a punctum. The puncta are turned toward the globe and usually can be seen only if the eyelid edge is everted slightly. Each punctum opens into a tube, the lachrymal canaliculus.

There are a total of four puncta, found in the medial corner of both the higher and lower lids. The lower system is perhaps the most important for drainage, and is the first place chosen for puncta plugs in cases of dry eye.

The normal punctal opening should be slightly twisted inward, pushed against the ocular surface With cases of ectropion, the eyelid is everted outward such that the pore inaugural is out of the tear layer, inactive out in the air. This can lead to excess eye watering and epistrophe.

Punctal plugs are tiny strategies that are placed in the eye’s tear channels (called puncta). Puncta are the tiny openings in your lids that drain tears from your eyes. The plug is about the size of a grain of rice, and it blocks tears from demanding from the eye. This helps keep the eye’s superficial moist and comfortable, releasing itchy, burning and red eyes.