This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anaesthesia
[{'content': "Stocker's line is seen in? \nSelect and explain. \nA. Pterygium, B. Glaucoma, C. Posterior scleritis, D. Diabetic retinopathy", 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Pterygium is line of iron deposition in the corneal epithelium seen adjacent to the head of the pterygium.", 'role': 'assistant'}]