Fool me, this is real good shit ! [the VR thread]

[Whiteball]

I can spend any amount of time in VR (and have done multiple hours+ in Elite) and it has no effect on my eyes whatsoever.

Some (badly) implemented games can make you feel quesy for sure, but nothing should hurt your eyes. If it is, then it isn't set up right (or maybe can't be set right for your eyes/eyesight).

Pupillary distance is massively important to get right for this as is wearing glasses if you normally do.
Just because these things are right on your face doesn't mean you shouldn't wear distance glasses either.

I guess another factor may be that I don't strap these things to my head very tight either, it's more just rested on the top strap and almost hanging rather than being clamped.

[gilesgoat]

arg. Be careful. Really not sure how healthy thats going to be.

I guess suffice I say last time I had my "yearly deep visit" about eyes and such and talked to the doctor she started to SCREAM "You ruin the sight of people with those things" - well NOT to what I was doing in particular, she had it at VR itself - and wanted to throw me out of the hospital.

The fact is VR "forces" your eyes muscles "fixed on a point" staring at not only a fixed focal plane at a distance "X" but also keeping your eyes straight into a position without moving, I guess bit like to say "keep this arm half raised without moving it for an hour" .. not exactly "the best" for you.

But yeah .. unless you go for "light field tech" and/or "eye tracking" there is not much that can be done about this.

[gumboot]

You could dynamically shift the focus around at random. Not sure how slowly you have to do that to stop it being annoying, though.

[gilesgoat]

You could dynamically shift the focus around at random. Not sure how slowly you have to do that to stop it being annoying, though.

No, you can't, the optics is fixed at the plane where the display is. You can't move the focal plane in any way.

[Whiteball]

I can't believe that people, especially so called 'professionals' still do not understand that staring at a fixed distance, will not, never has and never will affect your eyesight. It's just complete b*llocks!

I could go into a lengthy and technical rant about eyesight and related stuff, but I just can't be bothered. All the studies, research and material needed to understand the subject fully is out there, why can't people just read it?

[gumboot]

You could dynamically shift the focus around at random. Not sure how slowly you have to do that to stop it being annoying, though.

No, you can't, the optics is fixed at the plane where the display is. You can't move the focal plane in any way.

Isn't a lens required to alter the focal length so that it's within the range of human accommodation?

[Dio]

Yes, it sets it near infinity. Which is a more comfortable viewing distance for most people than up close.

[Darkflame]

arg. Be careful. Really not sure how healthy thats going to be.

I guess suffice I say last time I had my "yearly deep visit" about eyes and such and talked to the doctor she started to SCREAM "You ruin the sight of people with those things" - well NOT to what I was doing in particular, she had it at VR itself - and wanted to throw me out of the hospital.

The fact is VR "forces" your eyes muscles "fixed on a point" staring at not only a fixed focal plane at a distance "X" but also keeping your eyes straight into a position without moving, I guess bit like to say "keep this arm half raised without moving it for an hour" .. not exactly "the best" for you.

But yeah .. unless you go for "light field tech" and/or "eye tracking" there is not much that can be done about this.

Well, theres a lot of FUD and fear-mongering about HMDs. So maybe she was a little influenced by some of the worst she heard.
I am aware of the fixed-focus issue, and I guess its "as bad as" sitting at a monitor all day. After all, that's a fixed distance too.

I am not quite convinced its nothing at all - as Whiteball suggests - though, as I would imagine any situation where the body lacks motion in a muscle for a long time is going to cause problems. (of course if there is a good study, Id love the link. I had a quick Google [schoolar] but wasn't hitting the right keywords I assume).

[Jamesac]

Eh, regular usage will result in muscular eyeballs. Like learning anything new there's a bit of soreness while adapting and then you're fine.

[gumboot]

Yes, it sets it near infinity. Which is a more comfortable viewing distance for most people than up close.

So infinitely better than a computer monitor, then.

[gumboot]

Eh, regular usage will result in muscular eyeballs. Like learning anything new there's a bit of soreness while adapting and then you're fine.

I don't think there's any muscle that does particularly well holding a fixed position for a long time. You don't learn to cope with that, you learn to avoid it.

[Whiteball]

Basically without going into the finer points (of which there are lots).

Your eyesight is fixed around about 16-18 yrs old. Done.
What at this point determines how good that eyesight is, amongst other things is your exposure to Vitamin D (which isn't actually a vitamin at all - it's a hormone).

Of course peoples sight changes through their lifetime but it isn't their 'eyesight' - as above that's basically fixed - it's the lens that changes. Now there are all sorts of things and reasons why this is and I'm not going into that now. It's why laser surgery works, they shave bits off and re-shape the lens. It's why glasses work, they are a lens.

There are a lot of nuances and variables here that add a lot more details, but that is basically the nuts and bolts of it.

Obviously not counting diseased or physically injured eyeballs in the above, that's another thing entirely.

[gumboot]

What is this 'eyesight' thing that somehow excludes characteristics of the lens, then?

[Jamesac]

Give me a week and I'll flex my eyeballs at you. Or maybe have learned to take a break every 45 minutes or so. One of those two, or possibly both.

[zip accident]

This however, is a foam plastic cardboard clone for seven inch tablets:





https://www.amazon.co.uk/goggles-Stooks ... vr+headset