That's just the engine struggling, that's just a carp swimming around your legs.. That's just the blood-vessels bursting, that's just you running into a table because you can't see..
Holy shit dude, they're gonna start using that picture in anti-pot ads now! Take a break from the smoking man, or get some ventilation where you smoke or something, that's not normal at all.
My eyes tend to stay pretty clear as well, although when you smoke out a room, it's hard not to get red eyes. But there are red eyes, and there are these eyes, which are gonna be in my nightmares.
Red eye is the result of dehydration. I get really bad red eye too when i smoke, but if you drink 1 glass of plain fresh water per joint or so, it should reduce the effect quite a bit.
Of course it could just be burst blood vessels which isn't uncommon. A guy i worked with sneezed, when he opened his eyes, one of them looked like an iris swimming in blood. Tasty.