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': "Fluorescein angiography of a patient shows 'Bull's eye' lesions on the retina. Bull's eye retinopathy is due to: \nSelect and explain. \nA. Infrared light, B. UV-light, C. Phenothiazines, D. NSAIDS", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Phenothiazine derivatives may conjugate with the melanin of the pigment layer, resulting in degeneration of the outer layers of the retina and a characteristic "bull\'s-eye retinopathy" by fluorescein angiography. Ref: Ropper A.H., Samuels M.A. (2009). Chapter 13. Disturbances of Vision. In A.H. Ropper, M.A. Samuels (Eds), Adams and Victor\'s Principles of Neurology, 9e.', 'role': 'assistant'}]