The level of stupid shit you can suffer from as a human is ridiculous.
Like, for years I had no idea that the weird zigzag visual distortions I sometimes experience are called visual migraine. What kind of random bullshit is that?
The only reason why I even googled it was because one night the zigzagging filled my entire field of vision and made me effectively blind for a few minutes. One time it got that bad while I was walking the dogs and all I could do was “Well, I’m pretty sure I know in which direction my house is so I’ll just have to follow the paved road and hope my dogs keep me from going somewhere weird” The only reason why those of us who have this are even allowed in traffic is because it’s not a sudden blindness. We see it creep up on us and sometimes it goes away and sometimes we’re just blind for a little while.
And before people get worried about the pain, there’s none. It’s just called a visual migraine because of how it works.
But yeah, I just wanted to expand your knowledge about weird random stuff people can have in case you’d never heard of this. And admittedly, it’s a very low risk thing that isn’t sad or dangerous in itself, just meh and annoying. So feel free to give it to any character you just want to go blind for a little while for a completely none-dangerous reason that will come and go randomly.