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Kayser-Fleischer rings

American  
[kahy-zer-flahy-sher] / ˈkaɪ zərˈflaɪ ʃər /

plural noun

Pathology.
  1. deep green pigmentation of the cornea due to copper deposition, seen in Wilson's disease.


Etymology

Origin of Kayser-Fleischer rings

1925–30; after German ophthalmologists Bernhard Kayser (1869–1954) and Bruno Fleischer (1874–1965), who described them