I just saw my optometrist because the vision in my Rt eye suddenly decreased & I had a lot of blurring. He informed me I had had a stroke @ the back of my eye & showed test results. What is it called? Is there a likelihood of reoccurrence? What can I do to ensure it won't. I have a history of high BP & am on meds. I am not overwt & have never been, eat healthy, drink mainly water, about 8 glasses, walk a lot, & look healthy, I'm 66yr old.