I first started getting them in my early 20s. They would pop up and then get worse.....till my vision was nearly blocked on one eye (it varied as to which). At that point I had 2 choices, either lay down or fall down (I did the fall down trick once).... from dizziness & nausea. Did I mention a hell of a headache came on? I went to a Dr. he he told me it was a migraine. Back then there was no cure except to find out what was causing them and avoid that.....kind of a self medication thing. In my case it was lack of sleep. As I got older the migraines became less intense & more infrequent. I now just close my eyes for a half hour or so and the "spots" go away & I get just a dull headache.
I did have a stroke a couple years back....fairly mild....if there is such a thing.
I'm now on BP meds and aspirin therapy. The good news is the "spots" are even less frequent. I found "it's all in your head".
. A trip to a neurologist might be a good idea.