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': 'Not a feature of Mature Senile Cataract among the  following is \nSelect and explain. \nA. Pearly white colored, B. Diminision of Vision, C. Glare, D. Iris shadow', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Iris shadow is absent in mature senile cataract.', 'role': 'assistant'}]