Lesseeeeeee.
Once, when I was in kindergarten, I was scared of something (maybe it was storming) in the middle of the night and I ran to get my mommy. I ran into the corner of a wall, the corner connecting pretty much perfectly with my right eye. All I saw was a bright blue flash for a few seconds, and then terrible pain. I ended up with a huge line going down my face and through my eye, making me look like Anikan Skywalker from Episode III.