Well, it's what I always heard. But I'll retract my previous comment.
Berengaria_of_Navarre
joined 6 days ago
It's light refracting through otherwise invisible bacteria on your eyeball.
NB. This comment has since been retracted by the author.
Nah I've almost died a couple of times and it never even occurred to me to ask for assistance from anyone other than the doctor.
American highschool teacher?