Neither is permanent, though, and both should subside fairly quickly once you take the headset off. Wearing a headset for an hour or more does put some strain on your eyes and it can cause headaches if you’re not properly hydrated or motion sickness if the content you’re watching moves in a way that feels unnatural to your body. That said, eye fatigue is probably the most ‘dangerous’ part of VR. Putting the headset on for a few minutes at a time then taking it off, just to get your eyes used to having a screen that close. In fact, even for adults just getting into the medium, we recommend slowly getting acclimated. Whether it’s safe for kids ages 13 and under remains a subject of debate, but most companies recommend limited use for the age group with plenty of breaks. The general consensus is that yes, it’s totally safe to use, especially for adults whose eyes have already stopped developing and who don't really get motion sick. (Image credit: oculus) Is VR healthy? Can you get hurt while using it? The quality of this content varies wildly – just like every YouTube video isn’t an Oscar-award winning production – but the central idea behind it all is that it’s more immersive than 2D. VR works best when the content is produced for virtual reality and is viewed on a virtual reality headset… even a cheap one like the Google Cardboard. Now, obviously, not every video or videogame ever made is available in VR – at least not natively. It’s the first step towards the holodeck that you saw on Star Trek 40 years ago. Instead of looking at a shark on Discovery Channel, there are apps that put you in a shark cage and allow you to experience what it’d be like to see the animals swimming around you. Why people like it so much is because the content feels more immersive. VR is similar in that it sometimes uses tricks to add realism to content, but it doesn’t stop where the screen stops – it fills your entire field of view with an image or environment. When most folks think about VR, their first thoughts are of 3D – the display technology that used stereoscopy to give the illusion that images were popping out of the screen.
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