This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Schizophrenia Spectrum and Other Psychotic Disorders, Subject name: Psychiatry
[{'content': 'A 31 year old patient of schizophrenia who has been taking antipsychotics for 7 years was taken for ophthalmologic examination. The examination reveals presence of retinal pigmentaion. Which of the following is the antipsychotic patient is most likely to be taking- \nSelect and explain. \nA. Chlorpromazine, B. Thioridazine, C. Haloperidol, D. Quetiapine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Thioridazine is the only antipsychotic drug that causes retinal pigmentation, which in advanced cases may resemble retinitis pigmentosa. The deposits are usually associated with "browning" of vision. Thioridazone also causes : Prolongation of QT interval It has minimum EPS amongst typical anti psychotics. Chlorpromazine therapy : Deposits in the anterior poions of the eye (cornea and lens)', 'role': 'assistant'}]