<prompt> K-F ring is pathognomonic ofCholestatic jaundicePBCHemochromatosisDecreased ceruloplasmin level  <response>: Ans. d Decreased ceruloplasmin level. Ref. Parson, Diseases of Eye, 19th ed.568Keyser-Fleischer KF ring is a diagnostic feature of Wilsons Disease or hepatolenticular degeneration.TYPE OF PIGMENTDISORDERLOCATIONIronKeratoconus Fleischer ringCorneal epithelium Old opacity Hudson-StahhlineCorneal epithelium Pterygium Stockers lineCorneal epithelium Filtering bleb Ferrys lineCorneal stromaCopperWilsons disease, Chalcosis KF ringDescemets membraneMelaninPigment dispersion syndrome Krukenbergs spindleDescemets membrane 