<prompt> Following eye lesion are seen in which condition:Vitamin B12 deficiencyMultiple sclerosisWilson diseaseNF1  <response>: Ans. C. Wilson diseaseThe image is showing darkening encircling iris of the eye. These occur due to copper deposition in corneal Descemets membrane. These rings are a sign of Wilsons Disease. Other causes may be cholestasis primary biliary cirrhosis cryptogenic cirrhosis. 