This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Investigation in ophthalmology and miscellaneous topics, Subject name: Ophthalmology
[{'content': "Which is the commonest ocular manifestation of Tuberculosis? \nSelect and explain. \nA. Phlyctenular conjunctivitis, B. Choroiditis, C. Eales' disease, D. Acute Retinal necrosis", 'role': 'user'}, {'content': "Answer: B \nExplanation: Phlyctenular conjunctivitis used to be most common manifestation of tuberculosis, but now it is causes by staphylococcus Eales' disease (periphlebitis retinae ) occur in tuberculosis but it is not very common. Acute retinal necrosis occurs in Herpes simplex and varicella infection not in tuberculosis. Choroiditis is by far the most common manifestation of tuberculosis.", 'role': 'assistant'}]