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Punctum, plural puncta, adjective punctate, is an anatomical term for a sharp point or tip. It may also refer to: Medical.
The lacrimal punctum (pl.: puncta) or lacrimal point is a minute opening on the summits of the lacrimal papillae, seen on the margins of the eyelids at the lateral extremity of the lacrimal lake. There are two lacrimal puncta in the medial (inside) portion of each eyelid. Normally, the puncta dip into the lacrimal lake.
In 1988 M. Eric Anderson confirmed that Maynea was a monospecific genus and that Cunningham's M. patagonica was a junior synonym of Conger puncta which had been described in 1842 by Leonard Jenyns from type specimens collected on the second voyage of HMS Beagle in the Beagle Channel in Tierra del Fuego. [3]
A punctal plug, also known as tear duct plug or lacrimal plug, is a small medical device that is inserted into the tear duct (puncta) of an eye to block the duct. This prevents the drainage of liquid from the eye. They are used to treat dry eye. Artificial tears are usually still required after punctal plug insertion. [1]
Punctoplasty is a surgical procedure to restore proper drainage of tears [1] when the lacrimal punctum (puncta lacrimalia) becomes blocked in one or both eyes.. If a blockage is present in the puncta, doctors may suggest a procedure called punctoplasty, performed to widen the drain opening.
This page was last edited on 23 August 2007, at 10:20 (UTC).; Text is available under the
Puncta pruritica (also known as "Itchy points") consists of one or two itchy spots in clinically normal skin, sometimes followed by the appearance of seborrheic keratoses at exactly the same site. [ 1 ]
The existence of the puncta extraordinaria is relevant to reconstructing the history of the Masoretic Text. Because all Masoretic manuscripts contain these points in the same places, as well as agreement in a large number of other minor details, Paul de Lagarde (1863) proposed that they were all copied from a single original manuscript.