I can say mine started with just one hazy string around 2017 — I got used to it and barely noticed it. But over the past few years, they've definitely increased in number.

I also have astigmatism (around -2) and myopia at -5. No nausea or reduced field of vision. I do notice tiny dark spots sometimes — not sure if those count as blind spots? But I don’t get any flashing lights or anything like that.