Actually, eyeglasses are not the same; they refocus light into your eye, and you actually see…
Steven Watson Buehler

No, actually.. Glasses DO sorta result in an alteration to where you’re eyes need to focus. If you’ve worn glasses, think back to when you were younger, and first got glasses, or had a significant prescription increase/change at some point.. For a day or 2 after, everything feels a bit weird, it’s usually a little hard to focus quite right and things appear a little visually warped, you might feel a bit dizzy, or get a headache, or just need to take them off and rest your eyes for a bit. Happens all the time when experiencing a change in prescription, for glasses or contacts. It’s because your eyes need to adapt to focusing a little differently than before, they have to work their focusing muscles to a different degree, to look at the same place they did before. That’s a change in focus. You’re not used to it at first, and it can be a bit annoying, but you quickly adapt.

For some people who need more rare vision correction, there are actually lenses that focus what they see to infinity, so they can easily focus on anything, regardless of convergence.

That is actually what VR does. It makes your eyes focus off in the distance, called ‘focusing on infinity’, so that regardless of convergence, everything stays clear and easy to focus on. This is actually very easy to get used too, for most people.. Although, I’m sure some people might still have trouble, I don’t think most of them will take long to adapt to it. Also, the better the VR HMD’s quality, resolution, tracking accuracy and lowest possible latency, and better optics, the less people have problems with dizziness or motion sickness.

And it’s not just me. The general consensus is that the DK2 and better HMDs cause almost no motion sickness, headaches, or problems of that sort, as long as you don’t play games that involve things that create those problems in the real world. I’ve personally played Half Life 2 in VR for hours on end, without problem, and there are plenty of similar stories from other early VR enthusiasts. The game, and what it contains, is a bigger factor, than VR itself.

According to Oculus, when their engineers have posted in discussions on the VR forums/reddit, with the DK1 (no positional tracking, slow, and very low rez) most people experienced some motion sickness, regardless of experience content. With the DK2, roughly 3/4ths of users didn’t experience any discomfort unless a game contained excess motion or things that make players sick IRL. And supposedly with their consumer version, 99% of players wont experience discomfort, unless they play crazy games. Of course, there will always be a few people who just can’t adapt for some weird reason.

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