I'll get ahold of him for it, the latest study I can personally produce is from 1993, and I know this study was later than that.
I know you want hard evidence to claims that sux actually does not increase intraocular pressure as significantly as we once thought, and therefore quells the concern about extruding eye contents into your own head... please bear with me, I'll get it as soon as I can.
Didn't mean to open a new can of worms over MH, because that's a HUGE can of worms.