Yeah this is a tough spot for the guy. I think anyone in this situation needs to seriously get good medical review and advice, and let that drive the decision. He needs to remove the "desire factor" from the decision making, as hard as that may be to do. Even a dream career shouldn't be at the cost of his eyesight that is for sure. Really sad, but really serious too. Don't mess with losing eyesight, there are other ways to stay involved with the fight game without getting hit in the eyes.