I have a scene in my novel where a character gets popped in the eye with a steel pipe. I'm trying to add some little juicy bits of detail to describe what happens but am hitting a bit of a snag.

Here's an example:

"sharp little bone fragments punctured his sclera"

Would the general person know what a sclera is?

or would you keep it simple

"sharp little bone fragments bone fragments punctured his eyeball"