I know that pregnancy can make your eyesight worse in general (this happened with my last pregnancy) but has anyone experienced vision problems like blurriness or flashing lights?

Last night, I suddenly realized I was having problems focusing on text. Over the next 15 min or so, it progressed to the point where I had tons of flashing lights in my peripheral vision in my left eye, and my right eye was just generally blurry. I called my OB's after-hours line but by the time a doctor called me back, my vision had started to improve again so they told me just monitor it and come in if it started again. It ended up going away completely within 30 min and I've been fine since.

I have an OB appt tomorrow so of course I'll ask about it then, but I was wondering if anyone else has experienced this. It was really scary. I'm 36 weeks and was worried about pre-eclampsia, but I don't have any other symptoms.