Story time.
My wife is an optometrist.
One day a patient called the office because he had foreign body in his eye. No big deal. They had equipment for removing a foreign body from the eye safely. The patient asked how much the exam was. They told him (I think it was around $70) and he said he'd think about it.
He called up a little while later and said he got it out. He asked if he still needed to come in, and they explained that he still should have his eye checked to make sure it wasn't injured.
When he got there, my wife asked him how he got it out.
He said he used the edge of a razor blade to pick it out of his eye. He said he does it all the time.
If the thought of putting the edge of a razor blade against your eye is not horrifying enough, remember that when you're working on your own eye, you don't have depth perception.


