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
[{'content': 'Which among the following is the commonest parasitic cause of uveitis? \nSelect and explain. \nA. Toxocara, B. Amoebiasis, C. Taenia solium, D. Oncocercosis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Toxocariasis is an infestation caused by an intestinal roundworm of dogs (toxocara canis) and cats (Toxocara catis). Features of ocular toxocariasis: Toxocara chronic endophthalmitis Posterior pole granuloma Peripheral granuloma Ref: Comprehensive Ophthalmology by AK Khurana, 4th edition, Page 158.', 'role': 'assistant'}]