that's basically why the choice was implemented. There isn't a perfect solution, but guys/coaches were taking advantage of the injury rules.
FWIW, I thought Kasper's injury was that he drove into Nevill's knee, and not that he was poked in the eye.
I agree - he seemed to smack the top of his eye (i.e., the "Orbital Bone") on Nick's knee. Couldn't tell if it drew blood, but it is a painful place to smack yourself - looked like he was in quite a bit of pain, but then was okay.