Enlarged corneal nerves may be seen in all of the following except:
Enlarged corneal nerves not seen in Herpes simplex keratitis. Ref:Color Atlas of Ophthalmology: The Quick-Reference Manual for Diagnosis and Treatment By Amar Agarwal, Soosan Jacob, 2009, Page 191
Keratoconus
Herpes simplex keratitis
Leprosy
Neurofibromatosis