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Shortsightedness has become an epidemic

economist.com

361–370 of 424 posts

Re: Shortsightedness has become an epidemic

#361

I wore glasses for a few years in high school because I had trouble seeing the blackboard from anywhere but the front row. I started hiking and kayaking every day, especially in places where I could see for many miles. I also migrated from CRT to LCD to LED screens, and more recently to e-ink devices when possible. Very fine print in a dark space is hard to read, but I can read a moving US license plate from six bloc…

This makes me wonder: is there a lens that you could use instead of glasses that will make your computer screen appear as if it is further away? Could it help people regain their far-sight?

Re: Shortsightedness has become an epidemic

#362
post #174

Earlier quoted context omitted.

Sunlight exposure has been shown to be protective of eyesight, and we spend more time indoors focusing on screens. The timespan is too short for evolution to have had a considerable impact.

> The timespan is too short for evolution to have had a considerable impact. I am not talking about evolution as in developing new species but about survivability of naturally occurring variations. Modern humanity timespan is not enough in developing new genetic traits but long enough to alter effects of natural selection. BTW, due to advances in medicine nowadays we have children born and survive into adulthood with…

But the timeline is too short even for that. The number of children who survive today, despite genetic issues, who would not have survived 100 years ago, is miniscule compared to the extent of nearsightedness today.

Re: Shortsightedness has become an epidemic

#363
I'm hopeful that the shift to VR from PC gaming and perhaps also office productivity will help with myopia. Might seem counter-intuitive given the VR lens is next to the eye but focus in VR is in the distance. Even productivity in VR is usually done on huge screens further away from the user than traditions pc screens.

Re: Shortsightedness has become an epidemic

#364
post #345
post #336

Earlier quoted context omitted.

It's more likely that it works for a large majority. If you were born myopic or had an accident or something similar, yea it most likely wont work for you. But most myopes do not fall in those categories. I'm very open to hearing your arguments backing up your statement though.

My arguments are that if that were the case, we'd already be doing it. I work in the optical industry. To suggest that opthalmologists just haven't figured this out yet is just pants on head retarded, sorry.

We live in a world where not long ago smoking was considered fine by doctors. Where fat is demonized on nutrition labels while obesity surges. Where leaded gasoline was banned in gas not that long ago. Where a dozen diseases are increasingly prevalent and we have no idea why. To suggest that medicine hasn't figured something out is completely sensible. It can be argued that mRNA vaccine breakthroughs might not have happened without COVID, before that we didn't have it figured out. How many ophthalmologists are doing research, and how many are doing their job and going home because research doesn't pay? In every age many are convinced we've reached the pinnacle of science and have everything figured out, and that is pants on head retarded.

Re: Shortsightedness has become an epidemic

#365
post #345

Earlier quoted context omitted.

My arguments are that if that were the case, we'd already be doing it. I work in the optical industry. To suggest that opthalmologists just haven't figured this out yet is just pants on head retarded, sorry.

We live in a world where not long ago smoking was considered fine by doctors. Where fat is demonized on nutrition labels while obesity surges. Where leaded gasoline was banned in gas not that long ago. Where a dozen diseases are increasingly prevalent and we have no idea why. To suggest that medicine hasn't figured something out is completely sensible. It can be argued that mRNA vaccine breakthroughs might not have h…

There's just no evidence for it. It's that fucking simple.

Re: Shortsightedness has become an epidemic

#366
post #233

The different usage of words and their meanings in English is interesting and makes me think this weird miscommunication is why we have so many arguments. In my everyday, the article would be referring to nearsightedness, short sighted would be when someone doesn’t think through all the possible things, lacking foresight. By definition it’s both but in every day use it’s not.

In everyday use in this part of the world you never hear the word near-sighted. In Australia and I think a lot of other British English countries, short-sighted is the plain English term for myopic. (But the thing is most of us know that the US uses the other term)

Re: Shortsightedness has become an epidemic

#367

My child is following in my footsteps and has been prescribed glasses for nearsightedness. Her optometrist told us she should be watching TV rather than reading books. This was both surprising and upsetting, especially since she loves reading. This lead me on an interesting deep dive into existing research. What surprised me were the massive gaps in understanding. Scientist have at best established correlation betwee…

Cast ebook to TV.

Re: Shortsightedness has become an epidemic

#368
post #347

Everything in nature is fractal-shaped, while most things in our artificial environments are made of flat surfaces. If you think of light as a kind of "food" for the eyes, we are effectively eating junk food all day every day.

Lol that's just rediculous.

You misspelled ridiculous.

It's a metaphor. Eyes evolved to process much more intricate light fields than we typically get in our homes/schools/offices. That has an effect?

Re: Shortsightedness has become an epidemic

#369
post #329

In my early teens I had 20/15 vision. By the time I went to college I was wearing glasses for nearsightedness. I'm pretty sure it's because I got interested in computers, and started spending all day staring 3ft ahead instead of glancing around outdoors. Some friends in my computer science program passed around each other's glasses and found we all had nearly the same prescription. That didn't seem like a coincidence…

Gross generalization, but my suspicion is that it’s not the all day staring at computer (that’s most adults these days) but also many CS types spend their free time in front of a screen as well…

C types, not CS types.

Re: Shortsightedness has become an epidemic

#370
post #365

Earlier quoted context omitted.

We live in a world where not long ago smoking was considered fine by doctors. Where fat is demonized on nutrition labels while obesity surges. Where leaded gasoline was banned in gas not that long ago. Where a dozen diseases are increasingly prevalent and we have no idea why. To suggest that medicine hasn't figured something out is completely sensible. It can be argued that mRNA vaccine breakthroughs might not have h…

There's just no evidence for it. It's that fucking simple.

No evidence for what? Almost everything related to endmyopia is proven, aside from the whole thing put together.

The main thing, axial length reduction through undercorrection, has been shown in plenty of animals and humans.

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