Blue field entoptic phenomenon came back?

Okay, so about 8 years ago or so I noticed I had Blue Field Entoptic Phenomenon. When I looked at the sky or at really bright white screens. So no big deal - yeah, it was a little annoying at first but same with eye floaters, you just ignore it and with time, I got used to it. With time, I could have sworn I didn't even have this anymore.

It's been years since I have taken notice to this and today, I suddenly noticed them again while watching TV and was like "Huh, I could have sworn those went away!"

Is it possible for this to go away and come back, or have I just trained my brain into not noticing it until I did again? I was really tired and sleepless the last few days, btw. - I'm an editor and focus on things a lot and have attention to detail and I could have sworn that this went away years ago.