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
Herbert\'s pits are seen in – 
Select and explain. 
A. Trachoma, B. Spring catarrh, C. Phlyctenular conjunctivitis, D. Sarcoidosis
A: Trachoma
Answer: A: Trachoma 
Explanation: Herbert pits are the oval or circular pitted scar, left after healing of herbert follicles in the limbal area.