<prompt> Kayser Fleischer ring occurs atEpitheliumDescemets membraneEndotheliumAll of the above  <response>: Descemets membrane 410-Khurana 4thKayer- Fleischer ring - is a golden- brown ring which occurs due to deposition of copper Chalcosis under peripheral parts of the Descements membrane of the cornea K. F. ring seen in a patients of with liver cirrhosis or ataxia can confirm the presence of wilsons disease 507- Parson 20th edition 