Hi, My daughter, who is 30, had gallbladder surgery Friday morning. She was prescribed oxycodone for pain. Saturday morning she began itching and broke out in a rash so we called the pharmacy which recommended she stopped taking the oxy and start taking Benadryl. She has not had an oxy since 7 am yesterday. Her vision has become so blurry she is having to wear my reading glasses to read which is not normal for her. She is taking 800 milligrams of ibprophen every 6 hours. Any ideas on what could cause the vision problem.