“Why do my eyes hurt?” “You’ve never used them before.”

Until about six months ago, I would’ve said the HTC Vive was Valve’s virtual reality headset. It wasn’t, of course—merely the product of a mutually beneficial partnership. But with the VR market seemingly divided between Oculus on one side and Valve on the other, the Vive naturally became the face of SteamVR and everything “Not Oculus.”
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https://www.pcworld.com/article/3397088/valve-index-vr-headset-impressions.html