I have astigmatism and the result is night-blindness. You know your eyes are suffering when you mistake a chicken in your game for a pile of horse dung -- until it suddenly moves! (View Post)
That sounds like a mod conflict or game bug. If it happens with an empty Mods folder, I'd head over to https://answers.ea.com/t5/Bug-Reports/bd-p/The-Sims-4-Bugs. (View Post)