The suggestion to get in the habit of wearing safety glasses every time you enter the pen is a great one. I had a nasty peck to my eye a while back, too, and wearing the glasses got me over my fear.
As for dealing with your feisty little tyrant, training him shouldn't be that difficult, and it will help both of you to enjoy and appreciate each other once you establish your respective roles. Read this (scroll down a few paragraphs for his advice on training roosters)
http://olychickenguy.blogspot.com/2011/03/006-how-to-deal-with-skittish-chickens.html and you'll get some terrific tips.
One tip is to correct bad behavior by immediately reaching down and pinching the skin on the back of his neck like an older dominant rooster would do, and pushing him gently down onto the ground with the other hand.
I have a biter, and this technique has helped tremendously in controlling this very dangerous behavior.
Olychickenguy has posted occasionally on this forum and his advice as a chicken psychologist is amazingly instinctive, practical, and helpful. If you are so inclined, he also has developed a technique for house training chickens, among many other things. Absent from all of his recommendations is the one of resorting to the crock pot as a solution for bad roos.