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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.
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.
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]
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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]
Avitta puncta Wileman, 1911; Avitta quadrilinea Walker, [1863] Avitta rufifrons Moore, [1887] Avitta simplicior Gaede 1940; Avitta subsignans Walker, 1858; Avitta surrigens (Walker 1863) Avitta taiwana Wileman, 1915; Avitta zopheropa Turner, 1909
Ceryx puncta (H. Druce, 1898) Synonyms; Agaphthora puncta H. Druce, 1898; Ceryx puncta is a moth of the subfamily Arctiinae. It was described by Herbert Druce in 1898.