Been in for flake of steel in my eye a couple or three times over the years. Last time, though I had a chunk in my eye, washed with eye solution, felt better immediately so didn't give it another thought. Two days later, woke up with my eye on fire. Off to emergency, piece out of my eye was no big deal but had to return a day later to have eyeball scraped with a scalpel to remove rust stain off the surface. That part was not pleasant.