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That brings up a question for me: Are there people with wildly different near and far prescriptions whose vision would be improved by looking at the world throu

That brings up a question for me: Are there people with wildly different near and far prescriptions whose vision would be improved by looking at the world through this device which reprojects it at a fixed optical distance such that a single prescription can be used?

modeless 3y ago
Certainly wearing this device would remove the need to refocus your eyes, so people with presbyopia (everyone, yes everyone, gets it eventually) would see a benefit. But there are so many other downsides (FOV, latency, resolution, motion blur, color gamut, brightness, reprojection errors, not to mention battery life and comfort) that it would be hard to imagine that anyone's vision would be improved on the whole.
jrockway 3y ago
Yeah. It would be nice to stare off into infinity as you're working. I don't think a computer needs to be involved, though, you need glasses that have an autofocus system. That's what progressive bifocals try to be; when you look at something at the bottom of your vision, it's expected that it's close, so you're looking through a lens that compensates for your eye's inability to focus on something that close. It's imperfect, though; computers are close but they often fill your whole field of vision. That's the idea behind "computer glasses", though I personally could never get used to them because I'm not always looking at computer screens from the exact same distance. That's why you'd want something to measure the distance and adjust the focus, like your camera does. I think it's too complicated and what people do to work around it is just make the font gigantic or whatever. I have bifocals but honestly have enough control over focus to not really get tired looking at my computer screen through my distance prescription. But if I'm tired it does get harder, and I just lean back a little bit and look through my close-up prescription. (I have progressives so infinite adjustment between the two. It is nice when you get it perfect but only a tiny area of your vision is in perfect focus.) Also something that annoys me is that glasses lenses are super primitive compared to camera lenses. I have a pretty heavy prescription and always notice the chromatic aberration. Camera lenses use multiple elements to minimize this problem. I'd spend $3600 on a pair of glasses that could focus the entire field of view on one plane automatically. Prescription changes would just be firmware updates, so you wouldn't even be buying them every year. But, I don't think the tech is anywhere close to that yet. The vision pro isn't suitable, it's low resolution and has low battery life. You need 16+ hour battery life for glasses. But if someone invented my thing I'd buy it.

modeless 3y ago

Certainly wearing this device would remove the need to refocus your eyes, so people with presbyopia (everyone, yes everyone, gets it eventually) would see a benefit. But there are so many other downsides (FOV, latency, resolution, motion blur, color gamut, brightness, reprojection errors, not to mention battery life and comfort) that it would be hard to imagine that anyone's vision would be improved on the whole.

jrockway 3y ago

Yeah. It would be nice to stare off into infinity as you're working. I don't think a computer needs to be involved, though, you need glasses that have an autofocus system. That's what progressive bifocals try to be; when you look at something at the bottom of your vision, it's expected that it's close, so you're looking through a lens that compensates for your eye's inability to focus on something that close. It's imperfect, though; computers are close but they often fill your whole field of vision. That's the idea behind "computer glasses", though I personally could never get used to them because I'm not always looking at computer screens from the exact same distance. That's why you'd want something to measure the distance and adjust the focus, like your camera does. I think it's too complicated and what people do to work around it is just make the font gigantic or whatever. I have bifocals but honestly have enough control over focus to not really get tired looking at my computer screen through my distance prescription. But if I'm tired it does get harder, and I just lean back a little bit and look through my close-up prescription. (I have progressives so infinite adjustment between the two. It is nice when you get it perfect but only a tiny area of your vision is in perfect focus.) Also something that annoys me is that glasses lenses are super primitive compared to camera lenses. I have a pretty heavy prescription and always notice the chromatic aberration. Camera lenses use multiple elements to minimize this problem. I'd spend $3600 on a pair of glasses that could focus the entire field of view on one plane automatically. Prescription changes would just be firmware updates, so you wouldn't even be buying them every year. But, I don't think the tech is anywhere close to that yet. The vision pro isn't suitable, it's low resolution and has low battery life. You need 16+ hour battery life for glasses. But if someone invented my thing I'd buy it.