Heh, I have crap vision and am in the process of getting glasses. That being said I definitely couldn't use 60 Hz on a daily basis, but I don't notice the actual flickering frame-by-frame. It's very hard to explain, but I can see it flicker, and it irritates me until 75 Hz where it is only mildly annoying, and 85 Hz unnoticable. CRTs used to give me bad headaches in the back of my head and neck (and that was with 85 Hz (max refresh)). Since I got my LCD, I rarely, if at all, have those headaches anymore. I see motion blur, but it rarely bothers me.