lacrimal punctum


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Related to lacrimal punctum: Lacrimal canaliculi

lac·ri·mal punc·tum

[TA]
the minute circular opening of the lacrimal canaliculus, on the margin of each eyelid near the medial commissure.

lac·ri·mal punc·tum

(lak'ri-măl pŭngk'tŭm) [TA]
The minute circular opening of the lacrimal canaliculus, on the margin of each eyelid near the medial commissure.

lacrimal punctum

A small, round or oval, opening of the lacrimal canaliculus (duct) on the margin of each eyelid near the inner canthus and situated in the middle of a small elevation the lacrimal papilla. A lacrimal punctum is normally visible only if the lid is everted. Plural: lacrimal puncta. Syn. lacrimal point.
References in periodicals archive ?
A probe was inserted into the lacrimal sac from the lacrimal punctum to determine the precise location of the lacrimal sac.
In the control group, the epiphora was invisible, hyperemia was not found in the conjunctiva, no mucus or purulent discharge had outflowed from the lacrimal punctum, and the lacrimal passage was unobstructed (Figure 2(a)), which meant that animals in the control group did not show evidence of chronic dacryocystitis.
Meanwhile, although the rabbit only has one lacrimal punctum and canaliculus, the lengths and structures of its lacrimal sac and nasolacrimal duct that locates at the posterior part are similar to those found in human physiology, and its lacrimal duct histology is also similar to the human lacrimal duct in some respects.
At the end of the procedure, the polymerized adhesive could be seen over the lacrimal punctum and any remaining adhesive on the ocular surface was removed with the aid of a sterile swab or Adson forceps.
One animal from the GB group was presented with severe inflammatory reaction characterized by conjuctival hyperemia, chemosis, episcleral congestion and severe mucous discharge on the first day after the occlusion of the lacrimal punctum. Another animal from the same group developed severe pruritus two days after occlusion.
Dacryocystitis present as a swelling near the medial canthus of eye and pressure over the lacrimal sac express purulent secretions from lacrimal punctum.