Heh a good test to know if your really high is if you cant focus on anything with 2 eyes, have to keep one closed to see things straight.
Seeing as 90% of my reading is now done with 1 eye closed, I've been considering getting an Eye-Patch to wear whenever I'm reading simply for the lulz.
due to my pupils contracting/eyes blurring, when on Heroin I'd need to pretty much max out the text size of everything I was reading to ridiculously large sizes.
The Methadone maintenance I'm on now (when properly potentiated) results in needing to keep one eye closed, but the text size rarely needs to be increased too much larger than normal. Fortunately the nod is surprisingly still present as well, just not as powerful nor as frequent (which is more to my liking.)
Still, back in the day when I'd mess with Opiate Pills such as the OP is on, I can't ever recall experiencing any of the cross-eyed/blurry vision/nodding tendencies even when on an extremely high dose.
Such only seemed to occur when messing with the big boys at the top of the gateway.
Still, as has already been mentioned, this is quite a common effect of Opiates.
And to the OP, I'd highly recommend letting the Opiates take complete control at times, enter into the Nod and enjoy all the amazing amounts of blissful relaxation your Opiates have to offer.