Let's see.
I can't have something really outstanding in the corner of my eye, especially while watching something. Like while watching TV and there's a lamp turned on in the corner of my eye. My computer room is balanced because of this.
If it does happen, I have to look at it in the corner of my other eye to balance it out.
I won't believe that something is there/something is correct unless I look at it out of the corner of my eye, it's weird.
I've had many over the years, such as constantly stretching my mouth open like :O.
IDK why.