I'm 28 years old and I have been getting these blind spots on my vision in both eyes. I have been getting them for about 3 years now. They will appear in my vision in either the left eye or my right eye, this don't happen everyday, about 3-4 times a month. It's kind'a hard to explain but i will try my best. When these blind spots appear they take a shape of a black 'n' white squiggly line in my vision, at first they are a little faint then they worsen to the point to where if i'm looking straight at an object I can't see it, but I can see other things around it. This happens in both eyes but NOT at the same time. And it takes about and hour or two (sometimes longer) for it to go away. When it does go away, I can see just fine. And I hate it when this happens when i'm driving cause I can't see whats in front of me! When I was a kid, my left eye was a Lazy Eye, and the left lens on my glasses had to be thicker than the right lens. My left eye eventually got better and wasn't a Lazy Eye anymore and then I had a bad case of blurred vision in it. Wearing the glasses wasn't helping with the blurred vision so I stopped wearing them years after. After a while of not wearing them, the blurred vision cleared up really well (strange I know). And years later I started getting the blind spots in my vision. What could be causing these blind spot?