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Hi, Thanks for your question. I'm Dr. Hasan and I'll try to help you. I am sorry to hear about your problem. I am going to address your primary concern but later you can ask anything you want. This blood pressure reading is alarmingly low, specially for someone with a history of high blood pressure. It can be due to causes like dehydration, heart rhythm disorder, heart failure etc. He might just need intravenous fluids but since it is associated with blurred vision, we can also consider a stroke. So without a second thought, please take him to ER. I wish him good luck and that he gets well soon. My goal is to provide you with excellent service – if you feel you have received anything less, please reply back as I am happy to address follow-up questions. Kindly rate me when you are done. You can come back here to ask anything even after you have rated the answer. I will be glad to help you always. Regards