I cannot even take a NAP with them in. They dry out and feel like I have pennies in my eyes...dirty old pennies, too. :Q
If the lenses are brand new, I can go about 16-20 hours with them in. I take them out every night and soak them in all-in-one solution.
After about two weeks of wear, I can't have them in any more than about 8 hours before they become dry and painful.
I so desperately want to get laser surgery, but I'm a chickenshit. 😱 You only get issued one set of eyes. You break'em, you be screwed.