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
Corneal sensation is lost in 
Select and explain. 
A. Herpes simplex, B. Conjunctivitis, C. Fungal infection, D. Trachoma
A: Herpes simplex
Answer: A: Herpes simplex 
Explanation: A i.e. Herpes simplex Decreased corneal sensations, dendritic and geographical ulcers are characteristic features of Herpes simplex ocular disease Q Sensory supply of cornea is through trigeminal nerve Q. Neurotrophic keratopathy occurs due to paralysis of sensory supply of cornea. Causes of neurotrophic keratopathy or anaesthetic cornea are: