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Vision-Correcting Displays [video]

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Re: Vision-Correcting Displays [video]

#21

Post by kghose »

mattangriffel wrote: post #17

I've always thought it would be interesting to correct vision at the brain/neural level rather than the physical level. Can anyone comment on whether this would be possible?

This is indeed an interesting question. Why can't the brain develop a reverse blur function? We can do this with algorithms (http://en.wikipedia.org/wiki/Adaptive_optics). There was a fad (I guess) once about correcting your vision with practice (http://en.wikipedia.org/wiki/Bates_method).

I guess this is a limitation of the plasticity of our brains. People who have hearing or vision or other losses as young children adapt faster and better than people who have these losses when older.

It would be interesting to understand if young children with vision deficits can learn to see better with time.

My personal recollection is that I had NO idea things were blurry until my first visit to the optometrist when they put glasses on me. Things were so SHARP!

I think the core of this is that out adaptability depends on sensori-motor loops. We can calibrate our responses for faulty sensors, but we don't correct just for the sake of correctness.

Re: Vision-Correcting Displays [video]

#22

Post by DenisM »

If I understand this correctly, this is a light-field display.

The implications are bigger than vision correction - LF display can reconstruct actual 3d images, as opposed to the stereo images being marketed as "3d" today. Stereo displays give two different pictures to two different eyes, but the don't provide perspective shift (the picture doesn't change when you move your head left and right), and they don't provide different focal planes (your eyes focus on the screen plane regardless of how far the object is supposed to be, creating a dissonance between the distance inferred from the angle between the eyes and the focusing distance).

Re: Vision-Correcting Displays [video]

#24

Post by ivank »

thelad wrote: post #9

Don't get this, what's the point in 1 device being corrected while the rest of the real world is blurry? One use case example was a guy in a car with GPS navigation. So he can then see the GPS nav but how does he drive if he can't see properly!?

If you're nearsighted, maybe you could use this in combination with glasses to project near displays to look like they're farther away. This would eliminate the need to focus on near objects when you're reading or computing.

Re: Vision-Correcting Displays [video]

#25

Post by foxhedgehog »

thelad wrote: post #9

Don't get this, what's the point in 1 device being corrected while the rest of the real world is blurry? One use case example was a guy in a car with GPS navigation. So he can then see the GPS nav but how does he drive if he can't see properly!?

Yes I was also questioning the benefits of a less blurry GPS if I am about to plow into oncoming traffic.

Re: Vision-Correcting Displays [video]

#26

Post by bd »

DenisM wrote: post #22

If I understand this correctly, this is a light-field display. The implications are bigger than vision correction - LF display can reconstruct actual 3d images, as opposed to the stereo images being marketed as "3d" today. Stereo displays give two different pictures to two different eyes, but the don't provide perspective shift (the picture doesn't change when you move your head left and right), and they don't provid…

Yup, I wonder if this technology could be used to improve head-mounted displays, to be able to focus on different parts of the virtual scene, not just being always focused on infinity (probably together with high-precision eye-tracking to figure out depth where you try to look at).

Re: Vision-Correcting Displays [video]

#27

Post by serf »

One can imagine a pair of normal eyeglasses which have an IMU or accelerometer of some sort in them. When they sense they are being taken off, the users' phone switches profiles, the screen blurs, and the user moves seamlessly from glasses to phone without ever realizing what took place.

Would be a neat touch. I like connected appliances that aren't. (if that makes sense)

Re: Vision-Correcting Displays [video]

#28

Post by danellis »

Cass wrote: post #14
thelad wrote: post #9

Don't get this, what's the point in 1 device being corrected while the rest of the real world is blurry? One use case example was a guy in a car with GPS navigation. So he can then see the GPS nav but how does he drive if he can't see properly!?

If someone's far-sighted, as many people above the age of forty are, they might be able to see the street perfectly well, but have trouble reading a GPS screen that's only fourty cm away from their face. And speaking as one of the people whose vision defect can't be corrected by glasses, but only by uncomfortable contact lenses, there'd be immense value to me in a computer I can use without lenses - especially since…

> they might be able to see the street perfectly well, but have trouble reading a GPS screen that's only fourty cm away from their face

So they would also not be able to see their speedometer, or their fuel guage...

This is a technological solution looking for problems that are far more conveniently solved by conventional means.

Re: Vision-Correcting Displays [video]

#29

Post by lemonad »

danellis wrote: post #28
Cass wrote: post #14

Earlier quoted context omitted.

If someone's far-sighted, as many people above the age of forty are, they might be able to see the street perfectly well, but have trouble reading a GPS screen that's only fourty cm away from their face. And speaking as one of the people whose vision defect can't be corrected by glasses, but only by uncomfortable contact lenses, there'd be immense value to me in a computer I can use without lenses - especially since…

> they might be able to see the street perfectly well, but have trouble reading a GPS screen that's only fourty cm away from their face So they would also not be able to see their speedometer, or their fuel guage... This is a technological solution looking for problems that are far more conveniently solved by conventional means.

By conventional means, do you mean reading glasses? Observing people needing/using them, to me it seems like a hassle and definitely not a solution that most are satisfied with.

The video mentions both the GPS and speedometer as potential targets for this technology. Giving it some thought and being close to the age where I might benefit from this, it isn't such a bad idea after all.

Re: Vision-Correcting Displays [video]

#30

Post by danellis »

lemonad wrote: post #29
danellis wrote: post #28

Earlier quoted context omitted.

> they might be able to see the street perfectly well, but have trouble reading a GPS screen that's only fourty cm away from their face So they would also not be able to see their speedometer, or their fuel guage... This is a technological solution looking for problems that are far more conveniently solved by conventional means.

By conventional means, do you mean reading glasses? Observing people needing/using them, to me it seems like a hassle and definitely not a solution that most are satisfied with. The video mentions both the GPS and speedometer as potential targets for this technology. Giving it some thought and being close to the age where I might benefit from this, it isn't such a bad idea after all.

Obviously I can't speak for other bespectacled folk, but I wouldn't call them a huge hassle. I put them on in the morning, and take them off at night. Once in a while I clean them. That's about the extent of my interaction with them.

(Although I'm short-sighted, so the arguments above don't apply to me anyway.)

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