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: Ophthalmology
[{'content': "In pterygium, which layer of cornea is involved most often \nSelect and explain. \nA. Epithelium, B. Endothelium, C. Bowman's layer, D. Descemet's membrane", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Answer- C. Bowman\'s layerPterygium is a growth from conjunctiva, In cornea, it involves Bowman\'s layer."Corneal involvement in pterygia includes infiltration of Bowman\'s layer, a strong layer of collagen directly beneath the corneal epithelium. Disruption of Bowman\'s layer leads to scarring.Pterygium is a degenerative and hyperplastic condition of conjunctiva.', 'role': 'assistant'}]