LACRYMAL DUCT BLOCK: Commonly seen in newborns. Tear is produced by lacrymal glands situated at upper, outer part of the eyeball, flows over the eyeballs, then drains through a small opening at the nasal side of the lower eyelid to lacrymal sac, then through lacrymal(tear) duct to the nose. If the duct is blocked, tear accumulates in the sac, gets infected with swelling, redness and drainage of pus when pressed.
Answered 5/3/2018
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