| The zone is covered with fine puncta in quincunx, not visible under ordinary illumination. |
| You will not be able, for example, to add a punctum just after a 4-note neume: the area used by a neume is always the sum of the corresponding puncta. |
| Lacrimal fluid drains through the puncta into the lacrimal canaliculi and then into the lacrimal sac behind the medial canthal tendon. |
| The lacrimal drainage apparatus consists of the puncta on the upper lid and the lower lid, the canaliculi, the common canaliculus, the lacrimal sac, and the nasolacrimal duct. |
| This incision is made on the medial aspect of the puncta and anterior to the lacrimal duct probes. |
| In severe cases, occlusion of the lacrimal drainage puncta or tarsorrhaphy will be necessary. |
