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Myopia treatment 'smart glasses' from Japan to be sold in Asia

asia.nikkei.com

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Re: Myopia treatment 'smart glasses' from Japan to be sold in Asia

#231

Post by whoisburbansky »

bilegeek wrote: post #18
google234123 wrote: post #9

Earlier quoted context omitted.

How does this actually help treat nearsightedness when not wearing it? Does it change the shape of the eye ball?

It doesn't seem like it. They've had what you're talking about already: Orthokeratology[1], in which contact lenses temporarily reshape the cornea. [1] https://en.wikipedia.org/wiki/Orthokeratology

Nitpicking, but training eye muscles to tighten/loosen and thereby change the shape of the eyeball is more along the lines of what the technique apparently claims to do, and OP is asking about. Orthokeratology changes only the shape of the cornea, not the eye ball itself; it's a bit like talking about making a telescope physically longer/shorter vs. simply switching out the lens at one end for a different one.

Re: Myopia treatment 'smart glasses' from Japan to be sold in Asia

#232

Post by modeless »

panopticon wrote: post #229
modeless wrote: post #208

Earlier quoted context omitted.

This is a misunderstanding of what happens to your eyes as you age. Your eyes lose the ability to change focus. People with normal vision will have their focus stuck near infinity and will need reading glasses for close up things. People with mild myopia will have their focus stuck at close range and therefore won't need reading glasses. They will still need glasses to see clearly far away, but they always did, so it…

My parents had corrective eye surgery in the last decade (corrected their myopia), and they claim the eye surgery damaged their "reading vision." They lament the loss of their reading vision, and I have to keep explaining that they're experiencing presbyopia and not some damage the surgery caused. My myopia is pretty bad (-9.25 and -8.5 in contacts), so I don't even get the benefit of reading without correction.

For a disease which affects literally everyone as they age, presbyopia is astonishingly unknown. I didn't hear about it at all until I started working on VR and eye tracking.

Re: Myopia treatment 'smart glasses' from Japan to be sold in Asia

#233

Post by kazinator »

Off on a complete tangent here, only remotely related.

Yo, fellow four-eyed geeks.

I noticed that when lying down and looking up in a room with a light source, with my glasses on, if there is a small droplet of water on the lens (say, due to having just cleaned the glasses and not wicked up every last drop), this droplet can bend the light in such a way that when it subsequently hits the cornea and pupa, a perfectly straight, parallel beam of light passes through the vitreous humor right to the retina.

The consequence of this is that all the junk floating in your eye is rendered in "4K clarity" in a circle of light, regardless of whether it is next to the retina, or floating somewhere in the middle.

Imperfections in your cornea or elsewhere are also rendered, making themselves evident.

Re: Myopia treatment 'smart glasses' from Japan to be sold in Asia

#234

Post by nrb »

jfk13 wrote: post #197
pilsetnieks wrote: post #176

Earlier quoted context omitted.

-2 is not that blurry. You may not be able to reliably read a license plate at distance but you'll still see the (mildly blurry) car coming at you.

It's not just about whether you can see there's an oncoming car. For example, if you can't read the road signs ahead until a few seconds later than someone with "normal" vision, your driving will be seriously affected due to lack of timely information, and the added mental burden of trying to compensate for this.

My contacts are -1.75 with -0.75x148 astigmatism and I can't make out peoples faces unless I'm practically standing next to them. Nevermind trying to read a menu board at a restaurant counter or trying to find my glasses if I misplace them. Driving would be totally out of the question for me.

Re: Myopia treatment 'smart glasses' from Japan to be sold in Asia

#235

Post by azernik »

hug wrote: post #173
mattjaynes wrote: post #136

Ask yourself, how much brighter is it outside than inside (assuming a sunny day vs a brightly lit office)? Before looking into this, I would have guessed 2X or 3X, but would you believe it's actually over 100X! I bet most people's guess would also be off by 1 or 2 orders of magnitude. Even outdoors in the shade, it is over 50X brighter than indoors. (For specific numbers and comparisons, see: https://www.ncbi.nlm.nih…

Light perception is logarithmic, not linear, which is why your guess is so far off. 7 'shades' brighter and you're already hitting '100x'.

As are most human senses! Definitely hearing, vision, and smell; possibly also perception of force and weight, though the evidence is conflicting there.

Re: Myopia treatment 'smart glasses' from Japan to be sold in Asia

#236

Post by alliao »

kazinator wrote: post #233

Off on a complete tangent here, only remotely related. Yo, fellow four-eyed geeks. I noticed that when lying down and looking up in a room with a light source, with my glasses on, if there is a small droplet of water on the lens (say, due to having just cleaned the glasses and not wicked up every last drop), this droplet can bend the light in such a way that when it subsequently hits the cornea and pupa, a perfectly…

ok I've always wanted to map it out and keep track of them, I swear they come and go, so going to try this out later! If you can shed more details that'd be awesome! Does the droplet have to be dead centre??

Re: Myopia treatment 'smart glasses' from Japan to be sold in Asia

#237

Post by alliao »

ysw0 wrote: post #53
ludwigvan wrote: post #32

Has anyone here given this a try: https://gettingstronger.org/2010/07/improve-eyesight-and-thr... https://gettingstronger.org/2014/08/myopia-a-modern-yet-reve... It claims that myopia can be cured, just like muscles can be made stronger in a gym.

Anecdote: I used to get new glasses/prescriptions every year. Every year my prescriptions would get stronger. Last couple of years I stopped renewing my glasses and whenever I absolutely need to get new glasses, I have the store use my old prescription. For whatever reason, my eye sight stopped getting worse. I think by wearing stronger prescriptions, your eyes adapt to it and you get more and more myopic.

so I have 2 pairs of glasses, one for clarity at infinity for driving, and another one that's clarity at arms length when I work in the office and staring at monitor all day. I do that because I want my eyes to relax, give it a try!

Re: Myopia treatment 'smart glasses' from Japan to be sold in Asia

#238

Post by princeb »

outworlder wrote: post #149
atotic wrote: post #145

Earlier quoted context omitted.

I've read this study a while ago, and I think it helped me correct my son's myopia. When my 5yo kid's eye check came back with "he'll need glasses next year", we started strict "hour+ outside play daily" policy. At his next checkup, he had normal vision. Dr was surprised.

I believe that's still under active research. If this is a factor, my money is more on "your eyes will be focusing more at infinity" rather then low light levels.

https://www.nature.com/news/the-myopia-boom-1.17120

> In the early 2000s, when researchers started to look at specific behaviours, such as books read per week or hours spent reading or using a computer, none seemed to be a major contributor to myopia risk

> Rose's team tried to eliminate any other explanations for this link — for example, that children outdoors were engaged in more physical activity and that this was having the beneficial effect. But time engaged in indoor sports had no such protective association; and time outdoors did, whether children had played sports, attended picnics or simply read on the beach ... what seemed to matter most was the eye's exposure to bright light.

if your child loves watching tv, bring the ipad to the park and make her watch it outside.

Re: Myopia treatment 'smart glasses' from Japan to be sold in Asia

#239

Post by alliao »

f430 wrote: post #4

now if only they had something for astigmatism. There's surprising lack of progress

astigmatism is a nasty beast. Looking back at my prescriptions my astigmatism can jump all over the place, even within 4 months period. I had a holiday in Japan once, and they make you a pair of glasses within an hour, so I got some as a backup despite I've only just got a new pair recently and the astigmatism axis was a complete flip...

Re: Myopia treatment 'smart glasses' from Japan to be sold in Asia

#240

Post by dcassett »

modeless wrote: post #208
aaronscott wrote: post #180

Earlier quoted context omitted.

My understanding of the parent's post was that someone with -2 vision may expect roughly perfect vision as their eyes age. I couldn't find a study with data, but there are anecdotal guides online (for picking reading glasses) which state that by 60 years old, it's estimated that a person would need about +2.25 diopters in correction. So someone who is around -2 diopters may expect to have roughly perfect vision as th…

This is a misunderstanding of what happens to your eyes as you age. Your eyes lose the ability to change focus. People with normal vision will have their focus stuck near infinity and will need reading glasses for close up things. People with mild myopia will have their focus stuck at close range and therefore won't need reading glasses. They will still need glasses to see clearly far away, but they always did, so it…

It's also possible for the distance correction to change as one ages. In my case I have gone from -2 to +1.75 for distance in a span of 20 years.
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