I have had ocular migraines since I was in my teens. I have never figured how often I had them but probably once every 2 or 3 months. I am now 71 years old. I had AVR and ascending aorta graft eight months ago. I did amazingly well. I however started having ocular migraines every day or every other day immediately after surgery. Researched it but found very little. I told surgeon, cardiologist and pcp and all said they had never heard of this. I eventually saw neurologist, but she also had not heard of this. She did say that she had seen this happen after carotid surgery. neurologist said that she always puts migraine patients on a baby asa. This was her only recommendation. I really was suppose to be taking asa any way, so I started it. This was about three months after surgery. I don't know if it was the asa or just time, but ocular migraines slowly became less frequent. Now only about one a month. Still don't know what happened or why, but totally convinced that this phenomena was related to surgery or heart bypass. I am 100% recovered and back to walking five miles a day and riding my bicycle. I felt well even when having the ocular migraines, but very relieved that they have diminished almost back to preop frequency.