Live data from Hacker News

Shortsightedness has become an epidemic

economist.com

251–260 of 424 posts

Re: Shortsightedness has become an epidemic

#251

Pet peeve about language use: I thought it was obvious that short-sightedness (Exclusively Short term thinking) is an epidemic, nobody on Wall Street can see past the next Quarter's numbers. I don't need the economist to point that out. Nearsightedness is what this article is about... a completely different thing. I've dealt with that my entire life... and just went through the knock-on effect of retina detachment, a…

> Pet peeve about language use

My first thought was about shortsightedness as the medical issue.

because that's what the term means

short-sightedness

noun: shortsightedness

the quality of being short-sighted; inability to see things clearly unless they are relatively close to the eyes.

AKA myopia

Re: Shortsightedness has become an epidemic

#252

Pet peeve about language use: I thought it was obvious that short-sightedness (Exclusively Short term thinking) is an epidemic, nobody on Wall Street can see past the next Quarter's numbers. I don't need the economist to point that out. Nearsightedness is what this article is about... a completely different thing. I've dealt with that my entire life... and just went through the knock-on effect of retina detachment, a…

[deleted]

Re: Shortsightedness has become an epidemic

#253
post #81

I feel like this has always been a rather obvious thing...for at least what nearly a century or more? The whole trope of glasses are for nerds. Kids who spend time reading a ton are nearsighted. I understood this in elementary school, when the only kids with glasses were the smart ones. (I hated reading, and did not wear glasses, so was not a 'smart one'). I became nearsighted not long after getting a home computer,…

This is very anecdotal. I’ve been using computers since I was 4 years old, starting with a Commodore PET. I’m longsighted, so what do I draw from that? Only that we should use stats properly lest we become superstitious.

As another single data point, I started using a Commodore 64 when I was 5 years old, and have been besotted with computers ever since.

35 years on, and my eyesight somehow still remains fine - I'm slightly short sighted in one eye, slightly long sighted in the other (how does that even happen?!), but opticians always say I don't need glasses.

I think you're right - there are simply way too many factors to control for, and statistics is the way.

Re: Shortsightedness has become an epidemic

#254

For several decades it has been known that myopia (nearsightedness) and intelligence are correlated[1][2]. Initially it was speculated that reading caused nearsightedness, and through that higher intelligence. There is probably some truth to that. But with modern DNA sequencing techniques researches has found genes that seem to affect both[3][4]. The hypothesis is that one (or a set of) genes affects both eye size gr…

[deleted]

Re: Shortsightedness has become an epidemic

#255

Earlier quoted context omitted.

If we manage to have a kid, long walks everyday are planned :) More movement, less screen time is always good for health, parents' and kids' alike. Also, getting used to all sorts of weather improves the immune system. By spending too much time indoors we are becoming glasshouse flowers.

Good luck with the plan :) Under the age of about 1 to 1.5 then you get to call the shots of what happens when. Walk as mu h as you like. After that age, the kids start to get their own opinions and won't always just do what you want them to do. You may want to go for a long walk, but the kid wants to do something else. They'll spend 95% of the time trying to escape the buggy/stroller or trying to run off or just sit…

Kids are crazy. One second they'll be yelling in your face about how completely different from you they are, then the next minute they're repeating you verbatim to a friend.

You can absolutely get a kid excited about a long walk. It sounds like in your case your kid was enjoying it more than you were ;)

Re: Shortsightedness has become an epidemic

#256
post #252

Pet peeve about language use: I thought it was obvious that short-sightedness (Exclusively Short term thinking) is an epidemic, nobody on Wall Street can see past the next Quarter's numbers. I don't need the economist to point that out. Nearsightedness is what this article is about... a completely different thing. I've dealt with that my entire life... and just went through the knock-on effect of retina detachment, a…

[deleted]

[deleted]

Re: Shortsightedness has become an epidemic

#257

Earlier quoted context omitted.

This feeds into my pet peeve that Americans assume the world revolves around them and that all use of non American English is invalid despite the stereotype being that British English speaking people are worse for this.

It's not so much invalid as confusing. For Americans to call someone "shortsighted" has a well-known usage and negative connotation about their intellectual integrity. As someone who had never encountered the British usage prior to this headline, I don't think it's out of line to remark on this as a weird curiosity of our shared (but also frequently as in this case not shared) language.

the definition it's literally in every American dictionary though

Re: Shortsightedness has become an epidemic

#258

For several decades it has been known that myopia (nearsightedness) and intelligence are correlated[1][2]. Initially it was speculated that reading caused nearsightedness, and through that higher intelligence. There is probably some truth to that. But with modern DNA sequencing techniques researches has found genes that seem to affect both[3][4]. The hypothesis is that one (or a set of) genes affects both eye size gr…

No post body was provided.

Re: Shortsightedness has become an epidemic

#259
post #230

Earlier quoted context omitted.

The last study says “myopic children regardless of their IQ gain better school achievement”. This makes me think the difference is cultural vs genetic.

Does it mean they are more obedient? Not meaning that as a put down, but being good in school has a lot to do with behavior.

I think it's more likely that people treat people who wear glasses like they're smarter, and they feel pressure to live up to that.

Re: Shortsightedness has become an epidemic

#260

Almost all children are born hypermetropic (far-sighted). The growth of the eyeball is calibrated by the amount of defocus (blur) experienced. More defocus, more growth, which reduces hypermetropia. My hypothesis is that less sunlight means wider pupils and more defocus (contrast to a pinhole camera), so more eye growth. Even with perfect eyesight, there's a 2-diopter difference between focussing blue light and red l…

Mine is genetic. I have very similiar values than my mother. So i'mnot sure if / how your theory is correct or not. Also there are a lot of normal people in the world who live outside and also don't have perfect eye sight at all. This goes back a long time. Can you also elaborate on your 2 diopter difference between red and blue light? For one i find that number very very big but i'm very good in seeing full color wi…

Genes can cause or prevent myopia. However, genes do not spread rapidly and therefore cannot cause an epidemic. Obviously environmental factors are the major cause.
Post reply on HN