This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cornea, Subject name: Ophthalmology
[{'content': "Kayer fleischer ring affects: \nSelect and explain. \nA. Conjunctiva, B. Epithelium layer, C. Bowman's layer, D. Descemets membrane", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. (d) Descemets membraneRef: A.K. Khurana 6th ed. /434* Chalcosis: refers to the specific changes produced by accumulation of copper in the eye.* Clinical feature:# Kayser-fleischer ring: It is a golden brown ring which occurs due to deposition of copper in the peripheral parts of the Descemets membrane of the cornea.# Sunflower cataract: produced by deposition of copper on the posterior capsule of the lens.# Retina: It may show deposition of golden plaques at the posterior pole which reflect the light with a metallic sheen.', 'role': 'assistant'}]