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About: Limbus sign     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:Sign106646243, within Data Space : dbpedia.demo.openlinksw.com associated with source document(s)

Type: ThingDiseaseanatomical structureyago:WikicatMedicalSignsyago:Abstraction100002137yago:Clue106643763yago:Communication100033020yago:Evidence106643408yago:Indication106797169diseaseyago:Sign106646243 New Facet based on Instances of this Class

The limbus sign is a ring of dystrophic calcification evident as a "milky precipitate" (i.e. abnormal white color) at the corneal limbus. The corneal limbus is the part of the eye where the cornea (front/center) meets the sclera (white part of the eye). Thought to be caused by increased calcium concentration in the blood, this sign however persists after calcium phosphate concentration returns to normal. Compare the limbus sign (calcification) with arcus senilis (lipid).