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
Secondary glaucoma in early stage of herpes zoster ephthalmicus occurs due to: 
Select and explain. 
A. Trabeculitis, B. Iridocyclitis, C. Haemorrhagic hypopyon, D. Hypersecretion of aqueous humour
A: Trabeculitis
Answer: A: Trabeculitis 
Explanation: Ans. Trabeculitis