From the LiveScience post:
Virtual-reality headsets are likely to be at the top of many kids’ wish lists this holiday season, but with many VR devices coming with age restrictions, is the technology safe for youngsters?
The Oculus Rift and Samsung’s Gear VR headsets are recommended for ages 13+, while Sony’s recommendation for its PlayStation VR is ages 12 and up. HTC’s Vive is not designed for children, according to the company, and HTC said young children shouldn’t be allowed to use the headset at all. And Google said its relatively low-tech Cardboard headset should be used by kids only under adult supervision.
Companies have offered little explanation for these age recommendations. So what does the science say? According to Marientina Gotsis, director of the Creative Media & Behavioral Health Center at the University of Southern California School of Cinematic Arts, not a lot.