This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2019, Subject name: Anatomy
[{'content': "Fleischer's ring is seen in; \nSelect and explain. \nA. Keratoconus, B. Keratomalacia, C. Keratoglobus, D. Trachoma", 'role': 'user'}, {'content': "Answer: A \nExplanation: KERATOCONUS Non -Inflammatory central corneal thinning Young male with constantly changing power of glasses with myopia & high cylinder SIGNS IN KERATOCONUS Munson sign. Scissor reflex on retinoscopy (Earliest Clinical Sign) Enlarged corneal nerves-lower lid indentation on downgaze. Oil droplet reflex. Rizutti's sign Acute Hydrops - aqueous accumulated in stroma Fleischer ring-Paial or complete iron deposition ring in deep epithelium encircling the base of the cone. Characteristic in eyes with keratoconus.", 'role': 'assistant'}]