johnnyp

Actually there are no issues for the eyes with prolonged use. The lenses are focused to infinity so your eyes are completely at rest while using the Rift. This in effect means that it's more of a strain to look at your everyday monitor than it is to use the Rift. Positional tracking and a higher density screen are what's needed next and both of those are going to (supposedly) be what's happening for the consumer version. My dev kit runs at 1920x1200 but the density of the screen is such that you can easily see the individual pixels - makes playing a lot of games pretty hard - sniping someone off in the distance would be almost impossible as you wouldn't be able to very easily see them. Even games like Dirt are hard to play as the road in the distance breaks up so much you can't really see where it goes. Frame rate is OK for me with most games running somewhere around the 60frames (stereoscopically) - I have a single GeForce GTX 670.