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': 'Enlarged corneal nerves may be seen in all of the following except \nSelect and explain. \nA. Keratoconus, B. Herpes simplex keratitis, C. Leprosy, D. Neurofibromatosis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) Herpes simplex keratitisRef: Causes of Enlarged Corneal Nerves International Ophthalmology Clinics 4 (1): 12 - 23; Winter 2001 (Lippincott Williams & Wilkins) by kim, Stella K. M.D.: Dohlman, Claes H. M.D., Ph. D', 'role': 'assistant'}]