441–450 of 610 posts
Someone was asking about glass lenses. They are now mostly a premium product, not many online suppliers. https://www.2020mag.com/article/a-dawn-for-glass-lenses https://www.eyeglasses.com/prescription-lenses/glass/ http://www.lensfactory.com/glass-lenses/
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I believe that recycling aluminum takes significantly less energy than smelting it in the first place. I don't have any idea about plastics/papers.
Aluminum is the only part of recycle that is really profitable. That's way people picking through trash take the cans and nothing else.
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They're very reasonable in Japan too. If you visit Japan, bring your eyeglass prescription. There are lots of stores in Tokyo that grind their own glass that are not owned by Luxottica. This is how I got the best (and cheapest) pair of glasses I've ever owned.
At some stores you don't even need your prescription. I recently purchased my best (and cheapest) pair while visiting Japan and an eye exam was part of the transaction - at no extra cost! As an American I was shocked at how seamless and quick I was able to walk out with a new pair of glasses
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I'm not an expert, but I researched it a bit online since I found a charlatan who was promising people they could get rid of glasses completely. Expert opinion is that this is not possible, myopia is a physical condition that cannot be reversed easily. It is possible to get used slightly weaker lenses, but this is mostly your brain learning to adjust to the slight fuzziness. This seems in line with what tianmingwu ex…
> cannot be reversed easily Do you mean via some kind of therapy or intervention, or in general? I had pretty severe myopia 30 years ago, bad enough that I needed glasses in order to legally drive. But it steadily has gotten better, without any treatment. I stopped needing glasses to drive about 15 years ago, and now I have nearly perfect vision. EDIT: I searched around a bit and indeed it seems that the consensus is…
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Hearing aides are also insanely cheap to produce, they are not complicated devices and that market is only surviving due to the medical device status of them causing a high barrier to entry.
I think this is why Bose entered the market with “hearphones” to help hear people in crowded bars. So they could try to market them without spending the money to be a medical device.
It's a tall people problem too. You can hear everyone in the bar except person in front of you, 30cm below.
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When the law requires that you get a "certificate of need" in order to build a hospital, that is very much a protectionist measure. Requiring that medical student careers be approximately a decade long is another protectionist requirement. The FDA often functions to protect large players. There is a ton of protectionism in the U.S. healthcare "market".
> Requiring that medical student careers be approximately a decade long is another protectionist requirement. No, that's just reflective of how damn difficult it is to distill the body of knowledge required to be a doctor into a brain. Just because you can learn enough Javascript in 24 hours to build an insecure one-page CRUD app with an animated duck, doesn't mean that you can do the same with the human body. It tak…
I guess Australian doctors must suck, given that they do it in five years.
You want to know what's outrageously expensive, yet equally important for basic ability to function in the workplace and other situations? Hearing aids. Hearing aids are glasses for your ears. But compared to them, glasses are unbelievably dirt cheap, and basically fully covered by a lot of decent company insurance plans. Hearing aids? Not the case. Imagine if glasses cost $2-3000 per lens. PER LENS. And your company…
My wife was an office manager at an Audiologist's office. She has some crazy stories about that. Unfortunately, lots of people who don't hear well also shout all the time. Just part of doing business. :-) (Edit: She corrected me. SHE had to shout all the time.) Also, many people purchase hearing aids and then never wear them, because they can't stand the "new" influx of noise and most of it doesn't seem necessary or…
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I believe that recycling aluminum takes significantly less energy than smelting it in the first place. I don't have any idea about plastics/papers.
Post-consumer paper can be recycled in to some forms of low-density card that doesn't require high quality pulp. Egg cartons come to mind, and as a percentage in some packaging, newsprint and sanitary papers. Post-consumer paper cannot easily be recycled in to anything resembling printer paper due to the contaminants. Pre-consumer paper is recycled heavily as it's of known quality. I'm not aware of any plastics that…
Consumers didn’t like it because scratches accumulate on the outside of the bottles.
So if you lose your glasses after as little as six months and can't find your prescription, off to the doctor you go.