This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cornea and sclera, Subject name: Ophthalmology
[{'content': "Corneal layer which does not regenerate \nSelect and explain. \nA. Bowman's layer, B. Stroma, C. Descemet's membrane, D. Epithelium", 'role': 'user'}, {'content': "Answer: A \nExplanation: The layers of cornea are -(anterior to posterior) Epithelium Bowman's membrane Substantia propria(corneal stroma) Pre- Descement's membrane(Dua's layer) Descement's membrane Endothelium Bowman's membrane consists of acellular mass of condensed collagen fibrils. It is not a true elastic membrane but simply considered superficial pa of stroma. It shows considerable resistance to infection. But once destroyed, it is unable to regenerate and, therefore, heals by scaring. Ref;A.K.Khurana;6 th Edition; Page no: 96", 'role': 'assistant'}]