[zmmmmm]

I'm using an Oculus Quest. I can't say I would recommend it if you have that concern yet. It's usable but I only do so in specific contexts especially where either I really want to focus, or having an unnaturally giant screen is useful. So I wouldn't really do more than an hour or two at a time myself. But with another generation of improvements in the display tech I think it'll cross an important threshold. There are people who use them all day but I personally wouldn't.