This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Conjuctiva, Subject name: Ophthalmology
Herbert pits are seen in - 
Select and explain. 
A. Trachoma, B. Phyctenular conjunctivitis, C. Acute iridocyclitis, D. Posterior uveitis
A: Trachoma
Answer: A: Trachoma 
Explanation: Ans. is 'a' i.e., Trachoma Signs of Trachoma* Conjunctival signs Congestion, conjunctival follicles (boiled sagograin like), Papillary hyperplasia, conjunctival scarring (Arifs line), concretion.* Corneal signsSuperficial keratitis, Herbert follicles, Pannus, Corneal ulcer, Herbert pits, Corneal opacity.