Submitted 3 weeks ago by DeathByBigSad@sh.itjust.works to nostupidquestions@lemmy.world
I feel like I have a deep reliance on society and technology, because I can’t fucking see without glasses and I’m too scared to do Lasik lol (also expensive).
www.engineeringforchange.org/…/adspecs/
Hopefully if enough of these get distributed it won’t be so much of a problem except for people with astigmatism.
Holy shit this is amazing. I love inventions like this. This just oddly gives me a lot of joy. No need to waste hours on stupid eye exams, just adjust it whenever my eyesight deteriorates.
Awesome!
theguardian.com/…/diy-adjustable-glasses-josh-sil…
theguardian.com/…/joshua-silver-glasses-self-adju…
Original article I posted didn’t give a date, but the earliest articles about these glasses are from 2008-2011, so they’ve certainly been around for almost 20 years now.
You probably wouldnt want to buy it. They aren’t exactly a good fashion statement.
Well this is awesome but for me it wouldn’t work. B/C I’ve got an astigmatism.
Same, I have astigmatism and near-sightedness, a brutal combination.
Me too. Hey, ignoring the issue at hand, get weighted toric contact lenses. Just do it one time to try.
When I did, I realized what trash normal lenses are. Getting the lens and astigmatism corrected on the eye results in some pretty dramatically sharp view. It’s crazy, I started observing the stitching on carpets and the hair in the shower. I had never cared for either thing because I just can’t see it normally.
Not that useful in scenarios except for reading: if you curl your hands in front of your eye and leave a very tiny opening you can create a pinhole that’ll make a tiny bit of your view in focus
Photo from Minute Physics demonstrating what you need to do for that:
Been using this trick to read my alarm clock since I was ten!
You could make “glasses” out of wood or bone with thin slits using the same idea
Neat! I have really strong vision, but know how to force them out of focus. It’s weird not being able to blur my vision when I’m doing this.
I do much the same, make a tube out of my hands like I’m using a monocular. Works!
We could rely on scavenging what’s already been made. Even if it isn’t your exact prescription, a little might be better then nothing.
Our modern life involves a lot of reading and writing and sometimes very technical work. But the work of surviving on planet earth is a little less vision intensive: farming, cooking, childcare, handcrafts. Depending on how bad your vision is you might even be slow and shitty at these, but people can adapt to a lot and figure out how to perform tasks they’ve done before, even with poor vision. Look at the blind: they can be functional. Yes there are things like hunting which you could. not. do. with poor vision but that’s why we live in tribes. Someone younger with better eyes will do that while you shell nuts all day.
Yes there are things like hunting which you could. not. do. with poor vision
Matt Murdock took that personally.
Casey doesn’t have bad dreams because she’s just a piece of plastic.
I know of a YouTuber called the blind homesteader. He has family and friends help him. They have quite the homestead and he often helps the community around his homestead too.
Eye glasses started showing up around 1300 AD. Implies the basic tech / processes required to make them is relatively simple, given that they’ve been around in some form ever since the middle ages. Granted, they wouldn’t be as sophisticated as they are today, and many people with very niche issues would suffer.
Anything more modern, requiring microchips or heavily integrated international supply chains would go poof. Personally, I’d worry about dental and medical stuff we diagnose with x-rays. Like it’s not too uncommon for people to have a root canal these days… but it didn’t become a more ‘common’ thing until around the 1800-1900 period. Hell, getting your wisdom teeth pulled in a post-event world would likely suck some serious ass.
The way glasses worked in the beginning though was that you’d make a bunch of lenses and people would try a lot of them until they found one (or two) that let them see a little better.
It wasn’t anything like what you’d expect nowadays.
That’s how it would work in a post apocalypse too. People who wear glasses right now are typically on vision plans that allow for a new pair every year. I have like 5 old pairs, 4 of which no longer are really strong enough.
So depending on how far down the road post apocalypse you either randomly go through houses until you find a pair good enough, or if enough time has passed there were almost certainly be people specializing in selling glasses and medical things.
Now if you are far sighted all you have to do is walk into any abandoned CVS and go look through the huge rack of cheater lenses they have.
You can make a rough magnifying lens by trial and error using glass and a hand grinder—not the same as prescription lenses, but for many it would be better than nothing.
Any glass? Any grinder? Can I find a broken window and start sanding it with sandpaper, as an extreme example?
Some glass is many sheets glued together, that could be trickier to work with
Thick glass that’s not tempered will be the easiest to work with
Pretty much any piece of glass and a series of sandpapers going from low to high grit will eventually work if you know what you’re doing
Yes, it’s not magic, it’s just the shape of the glass that makes the focus point of images be slightly closer or further apart.
Can I find a broken window and start sanding it with sandpaper, as an extreme example?
Yes, provided you have a way to polish it back TU transparent again, after changing the shape.
Just saw a YouTube documentary that reminded me of this comment—it describes how Galileo made his lenses by hand from window glass using an artillery ball as a grinder.
i feel like there’s some sort of childhood song about the dangers of silicosis we were supposed to learn but praise mandela didn’t
It took centuries to get to disposable contact lenses while trying to figure out the physics, both in optics and in manufacturing any sort of spectacles, at the same time.
Will the survivors of the apocalypse be able to pick up where we left off or will they essentially start from scratch? That depends on the apocalypse and on the survivors. Do documents and knowledge survive, perhaps in a stash or in digital form? Do the survivors include an optician or a material engineer? Chances look good if that’s the case. If no, life will get a lot harder for many people.
Restarting production chains and manufacturing facilities is going to be the biggest bottle neck.
If we imagine something like climate change wiping out 99% of the population, there just aren’t enough people to do all that. It’s going to be all hands on deck just to produce enough food for everyone. It will take a few centuries of rebuilding to get to that point.
for less people you need less manufacturing capacity
One would think that if most of society is toast there will be a shitload of left over glasses that could be collected and then distributed to those in need.
I have never put on a pair that was even close to my prescription. In fact, this post made me realize I’ve been wearing my old glasses all day and that’s why I have a headache.
There are always exceptions to the rule. There are people that have super special prescriptions and then there are other people that just have the standard stuff due to age, etc.
Based on that, the majority of people would have a pair that match them. Anyone else with special glasses would be shit out of luck because as the title says it’s the end of the world and only a few peops left.
Let’s not be ruled by exceptions to the rule. It is only a tiny amount.
Glasses aren’t all the same, you know. What if you have a really crazy prescription?
Out of all the people with glasses in the world, there’s somebody who’s almost guaranteed to have the same eyes.
Do we have surviving scientists and engineers? Then everything is easy-ish: Progress took time because we didn’t know anything, everything was trial and error. Now we know the correct forms of physical laws or their usable approximations so rebuilding is just a matter of time (generations maybe).
If somehow the collective wisdom is lost, back to the stone ages with you.
If people survive the “apocalypse” then glasses will survive too. You just likely won’t be lucky enough to get lenses that are a perfect match for your prescription.
6 out of 7 houses on my street have at least one person with vision problems. Between the six of the houses we probably conservatively have over 50 pairs of lenses if you count all the old pairs people tend to hang on to. My house has at least 10 just by itself.
If you have or can scavenge a laser pointer, just go hog wild shining it all around in your eyes. You have nothing to lose trying it at that point and maybe you get lucky and give yourself DIY lasik.
💀
Pretty sure LASIK involves cutting open your cornea and affecting the aqueous fluid to correct the refraction. They don’t just shoot lasers into your eyes to make you see good
Agree to disagree.
I was going to say that I’d trust my luck more with a post-apocalypse optician than post apocalypse lasik and I think you make my point quite well.
Maybe contact lenses are apocalypse proof
Always keep a year supply of dailies on hand
yeah but how much solution you got for stretching those dailies out
If there’s that type of event, we (the survivors, that is. 95% of us will die) are going back, way back. When the elevator falls from the 21st century down to the 20th and 19th, the cable snaps and we’re going back to the ground.
See, even a hundred years ago, items like a light bulb or electric motor already depended on a very large supply chain and many people working together that never meet in real life.
How do you make glass? Do you even know what glass is, how many types there are, how to make it different thicknesses or shapes? And even if you can, can you make more for everyone else?
What are you doing in the meantime that you don’t have glass? How are you feeding yourself? With what?
Even if you think glass is “simple”, how would you get the materials and tools? The people who used to do that, where are they? What knowledge have they lost? Where is that material today?
In other words, you’re back to your bare hands and wits and whatever is in walking distance from you, right now.
Think you’ll survive long enough to worry about glasses?
I assumed surviving doctors would do for people what they did for sawyer in lost.
Use what you can find to get as close as you can per eye.
Other than that, sucks to suck, And I say that as somebody who is both near sighted and far sighted.
You’ll have to hit up the local glasses stores. Luckily there’s plenty of em.
You’ll be okay, OP. It will be extra shitty though. Imagine running from a horde of cannibalistic raiders and you drop your glasses…
Jokes on them, I didn’t take good care of myself and am under constant stress. My meat is probably foul AF.
For myopia, only an issue for a couple of generations. If we’re living off the land again, myopia will stop being a thing as in the past.
Aristotle was writing about myopia over 2000 years ago...
Still owes me 20 bucks, just sayin
True but the rates of myopia were minuscule compared to today. Bad phrasing: not a thing insofar as it barely affected anyone.
But the first generation of survivors is gonna live like hell without glasses.
if we can make glass we can make simple lenses. I just don’t know the limits as I’m neither an eye, lens, nor materials scientist.
I once lost my glasses and used an ordinary drinking glass as a monocle as substitute. It wasn’t perfect, but good enough for me to find my glasses. (This was before cell phones had cameras).
Having been very near sighted for most of my life, I’ve come to the conclusion that it’s not really that big of a handicap. It’s mostly an issue for reading things, and even that can be done when putting it close enough.
I can’t really think of anything in a hypothetical apocalypse where 20/20 vision would be absolutely necessary.
Good vision could help with food gathering (hunting/foraging) but if youre in a farming community I imagine you’ll be fine.
We’re fucked. Our genes told us.
get an extra pair, throw it in the safe where you keep your beans and water
Lag@lemmy.world 3 weeks ago
People who wear glasses are screwed but not as screwed as people who rely on medication.
WoolyNelson@lemmy.world 3 weeks ago
I have trained my children from a young age that, in case of zombie outbreak or alien invasion, I am to be left behind. I require far too many medications to function in a post-apocalyptic setting.
Stern@lemmy.world 3 weeks ago
What oddly specific training. Is there a training regimen for a “Evangelion everyone got turned into Tang” situation too? What about the “Just got spider powers and a Canon event may be coming”?
LadyButterfly@reddthat.com 2 weeks ago
I too am certain to die so my plan is to heroically sacrifice myself. Full on “I got this” while my friends are pulled away screaming “nooooooooooooooooooo!”
Reyali@lemmy.world 3 weeks ago
My partner and I have discussed our wildly different willingness to try to survive in a post-apocalyptic world plenty of times over the years. He would work to survive and would probably thrive more than the average survivor. Me? I’ve always said I’ll likely head to the cough syrup section of the pharmacy.
This conversation came up earlier today, in fact. Well, I was recently diagnosed with rheumatoid arthritis. I’m still sorting out the right medication to get it under control and am dealing with a lot of pain, but way less than before starting treatment. I told him with this diagnosis, if society ever collapses in a way that causes me to be unable to get my medication? I’m out.
salacious_coaster@infosec.pub 3 weeks ago
I’m on the same page. I’ve spent most of my adult life testing the limits of my skills, wit, and badassery. My conclusion from that is that I am not a badass and have no interest in trying to survive societal collapse.
5in1k@lemmy.zip 2 weeks ago
I want to see a movie like The Road but it’s kids dragging their parent in an iron lung down the road.
magikmw@piefed.social 2 weeks ago
But I'll thrive with my untreated ADHD (unlikely)!
Septimaeus@infosec.pub 2 weeks ago
I dunno, reading through common ADHD traits sometimes sounds like a description of the perfect post-apoc survivor lol