Corneal sensation is lost in-: (A) Herpes simplex, (B) Conjunctivitis, (C) Fungal infection, (D) Trachoma
Answer is A. Corneal sensations are diminshed in herpes simplex keratitis,more specifically in Disciform keratitis caused by herpes simplex virus. Reference:Comprehensive ophthalmology,AK Khurana,6th edition,page no.109