This guy figured out the eye poke problem.

Against Jon Jones, he hammerfisted Jon's outstretched fingers. That stopped Jon from trying to eye poke too much. He talked about it later in a podcast.

Now if you striked fingers head on with a straight punch, you can damage fingers pretty bad making it hard to grapple or clinch. And its a low risk move too.

Could be a really clever way to get rid of eye pokes if fighters tried it more.