This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Infection, Subject name: Medicine
Most common nerve involved with Herpes Zoster is- 
Select and explain. 
A. Maxillary nerve, B. Mandibular nerve, C. Facial nerve, D. Ophthalmic division of trigeminal nerve
D: Ophthalmic division of trigeminal nerve
Answer: D: Ophthalmic division of trigeminal nerve 
Explanation: Herpes zoster occurs due to reactivation of VZV which remains in latent form in the dorsal root ganglion. Although thoracic dermatomes are most commonly involved ,the ophthalmic division of the trigeminal nerve is also frequently affected ; vesicles appear on the cornea & lead to ulceration. This condition can lead to blindness. Reference Harrison20th edition pg 1001