Hi @wesbig. Great question, but I'm sorry to hear about the blurry vision. I found a list of potential side effects for Paquenil and blurry vision is listed as a less common side effect (http://bit.ly/2a8wUh0). I would encourage you to at least consult with your doctor or a pharmacist to let them know what's going on. I'm also including information from Mayo Clinic: http://mayocl.in/29WS3JT.