Had AVR on May 5 2017. All went pretty well except that I got cellulitis and Afib which prolonged my hospital stay to almost 3 weeks. I am now almost 6 months post op and off blood thinners and am taking minimal dose of metroprolol. Feeling pretty well and have gone through cardiac rehab with no difficulty. What I am having problems with are headaches around my left temple and vision problems. With no advance notice my vision becomes disturbed with inability to focus for about 3 to 5 mins. and a lingering headache. This very disturbing especially if driving. After effects are a feeling of lightheadedness and exhaustion. Not sure if this will go away in time or not. Echos show no problem with carotids. Dr says probably migraine . Anybody else have this post op.?