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
Systemic coicosteroids in herpes zoster ophthalmicus are indicated when associated with 
Select and explain. 
A. Facial nerve palsy, B. Optic neuritis, C. Post-herpetic neuralgia, D. All of the above
B: Optic neuritis
Answer: B: Optic neuritis 
Explanation: Ans. Optic neuritis