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
Enlarged corneal nerves may be seen in all of the following except – 
Select and explain. 
A. Keratoconus, B. Herpes simplex keratitis, C. Leprosy, D. Neurofibromatosis
B: Herpes simplex keratitis
Answer: B: Herpes simplex keratitis 
Explanation: Enlarged corneal nerves 
Enlarged corneal nerves appear in several conditions; the most important to recognize is the dominantly inherited multiple endocrine neoplasia syndrome type 2B (MEN type 2B).
Other causes of enlarged corneal nerves include :-

Keratoconus
Advanced age
Neurofibromatosis
Keratoconjunctivitis sicca
Leprosy
Fuchs' endothelial dystrophy
Ichthyosis
Congenital glaucoma
Refsum's disease
Acanthamoeba keratitis
Trauma
Failed corneal graft
Hereditary ectodermal dysplasia