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It's clear now that the physical changes (deterioration) in the eye correlates to insufficient UV exposure. So that's a good place to start, particularly if you

It's clear now that the physical changes (deterioration) in the eye correlates to insufficient UV exposure. So that's a good place to start, particularly if you're young. Sunseekers live longer, too.

corndoge 9y ago
[citation needed]
eyeguy 9y ago
The article is behind a paywall so I'm not sure of the content. However, I hope this is sarcasm. 30 somethings that get suckered into the sungazing myth are some of the saddest patients.
- azeirah 9y ago
  Sungazing? You're replying to someone who said "sunseeker" > a person who enjoys spending time outside during warm weather, especially one who travels to a destination for its warmth and sun. > "thousands of sunseekers flocked to Britain's south coast on Sunday"
wakamoleguy 9y ago
I can't find a single source to back up insufficient UV exposure leading to eye damage. Do you have any for further reading? From what I can tell, the sunseekers claim is based on a study[1] where people were surveyed about their sun exposure, and then mortality was examined years later. The most likely causes identified for the longer lives of those with more sun exposure was vitamin D preventing heart disease. I feel like there's more to the story, since vitamin D is also available in other forms that don't involve UV exposure. [1] https://bottomlineinc.com/health/longevity/more-sun-longer-life https://bottomlineinc.com/health/longevity/more-sun-longer-l...
- mrob 9y ago
  https://media.jamanetwork.com/news-item/increased-uvb-exposure-associated-with-reduced-risk-of-nearsightedness-particularly-in-teens-young-adults/ https://media.jamanetwork.com/news-item/increased-uvb-exposu...
  - wakamoleguy 9y ago
    Thanks for the source! It looks like this one looked at a large number of people and controlled for various factors. The skeptic inside me is still saying "Correlation does not imply causation," but this is a great start in showing a connection. Personally, I'd still say that it is far from clear that insufficient UV radiation causes eye deterioration.
- jimhefferon 9y ago
  Can't vouch for the articles, or UV-ness, but a very little googling got me these. K. A. Rose, G. Morgan, et al, Outdoor activity reduces the prevalence of myopia in children, Ophthalmology, August 2008 P. C. Wu, C.L. Tsai, Outdoor activity during class recess reduces myopia onset and progression in school children, Ophthalmology, May, 2013 https://www.cbsnews.com/news/kids-exposed-to-more-sunlight-less-likely-to-need-glasses/ https://www.cbsnews.com/news/kids-exposed-to-more-sunlight-l...
  - wakamoleguy 9y ago
    Awesome, thanks. My searches must have missed these, as I was focusing on UV radiation rather than outdoor activity. It looks like there's still a ways to go to understanding the causes of myopia.
    - walterbell 9y ago
      There's a feedback model which claims that under-correction can help reduce myopia, which is especially relevant for extended computer usage: Antonio Medina, Detecting the effect of under-correcting myopia, 2015: https://www.academia.edu/29691342/Detecting_the_effect_of_under-correcting_myopia https://www.academia.edu/29691342/Detecting_the_effect_of_un... Peter R Greene and Antonio Medina, The Progression of Nearwork Myopia, 2016: https://www.omicsonline.org/open-access/the-progression-of-nearwork-myopia-OMOA-1000120.pdf https://www.omicsonline.org/open-access/the-progression-of-n...
      - no_identd 9y ago
        Does this model DIRECTLY account for the research from this paper: http://journals.lww.com/optvissci/Abstract/2013/11000/Spherical_Aberration_and_the_Sign_of_Defocus.18.aspx http://journals.lww.com/optvissci/Abstract/2013/11000/Spheri... Last time I checked, most myopia research didn't and sidelined it although it explains so much, I consider it an extremely underrated paper.
        walterbell 9y ago
yborg 9y ago
I think it was general light intensity, not specifically the UV component. Prolonged UV exposure causes cataracts.
- walterbell 9y ago
  Yes, e.g. bright, quality (e.g. LED), indoor light (without UV!) therapy can have benefits. https://www.comsol.com/blogs/calculating-the-emission-spectra-from-common-light-sources/ https://www.comsol.com/blogs/calculating-the-emission-spectr... https://glarminy.com/2016/06/15/reduce-computer-eye-strain-headache-fluorescent-light/ https://glarminy.com/2016/06/15/reduce-computer-eye-strain-h...
- Nomentatus 9y ago
  Are you guessing what the studies controlled for, or did you review them?
modeless 9y ago
You are thinking of myopia. The article is about presbyopia. They are quite different. The eye has a range in which it can focus. Myopia is a shift of the range due to the shape of the eye, while presbyopia is a shrinking of the range due to hardening of the lens. zero infinity --------------|-------------|-------------- ----------------| |------------- < normal focus range ----| |------------------------- < range of myope ----------------------| |------------------ < range of presbyope Only some people get myopia. Everyone gets presbyopia.
- schoen 9y ago
  This comment is great: it corrects a common misconception with detailed technical information, ASCII art, and the word "myope"!
- amadvance 9y ago
  Yep. Myopia move the focus of the eye from infinity to 1m/diopters. I'm myope with 4 diopters, and my focus is at 25cm. This means that even being also presbyope, I can read a book without lens if I put it at 25 cm from my eye.
- Nomentatus 9y ago
  Both are collagen disorders, both seem to correlate to UV light exposure (lack of same.) Do drop a study citation if you know of a study showing otherwise, I'd be most interested.
  - modeless 9y ago
    On the contrary, I'm not aware of any evidence for UV providing protection against presbyopia (though I haven't done extensive research). This article seems to suggest the opposite. https://www.ncbi.nlm.nih.gov/m/pubmed/2677104/ https://www.ncbi.nlm.nih.gov/m/pubmed/2677104/
    - Nomentatus 9y ago
      You may have flipped the meaning, or it's more complex. The abstract is unclear. To quote: "Of all factors reported to affect the onset of presbyopia, UVR has the most scientific support..." Of course, if this is similar to other effects, such as longevity, intermittent UV exposure will be harmful, and constant exposure helpful.

It's clear now that the physical changes (deterioration) in the eye correlates to insufficient UV exposure. So that's a good place to start, particularly if you're young. Sunseekers live longer, too.

corndoge 9y ago

[citation needed]

eyeguy 9y ago

The article is behind a paywall so I'm not sure of the content. However, I hope this is sarcasm. 30 somethings that get suckered into the sungazing myth are some of the saddest patients.

azeirah 9y ago
Sungazing? You're replying to someone who said "sunseeker" > a person who enjoys spending time outside during warm weather, especially one who travels to a destination for its warmth and sun. > "thousands of sunseekers flocked to Britain's south coast on Sunday"

wakamoleguy 9y ago

I can't find a single source to back up insufficient UV exposure leading to eye damage. Do you have any for further reading? From what I can tell, the sunseekers claim is based on a study[1] where people were surveyed about their sun exposure, and then mortality was examined years later. The most likely causes identified for the longer lives of those with more sun exposure was vitamin D preventing heart disease. I feel like there's more to the story, since vitamin D is also available in other forms that don't involve UV exposure. [1] https://bottomlineinc.com/health/longevity/more-sun-longer-life https://bottomlineinc.com/health/longevity/more-sun-longer-l...

mrob 9y ago
https://media.jamanetwork.com/news-item/increased-uvb-exposure-associated-with-reduced-risk-of-nearsightedness-particularly-in-teens-young-adults/ https://media.jamanetwork.com/news-item/increased-uvb-exposu...
- wakamoleguy 9y ago
  Thanks for the source! It looks like this one looked at a large number of people and controlled for various factors. The skeptic inside me is still saying "Correlation does not imply causation," but this is a great start in showing a connection. Personally, I'd still say that it is far from clear that insufficient UV radiation causes eye deterioration.
jimhefferon 9y ago
Can't vouch for the articles, or UV-ness, but a very little googling got me these. K. A. Rose, G. Morgan, et al, Outdoor activity reduces the prevalence of myopia in children, Ophthalmology, August 2008 P. C. Wu, C.L. Tsai, Outdoor activity during class recess reduces myopia onset and progression in school children, Ophthalmology, May, 2013 https://www.cbsnews.com/news/kids-exposed-to-more-sunlight-less-likely-to-need-glasses/ https://www.cbsnews.com/news/kids-exposed-to-more-sunlight-l...
- wakamoleguy 9y ago
  Awesome, thanks. My searches must have missed these, as I was focusing on UV radiation rather than outdoor activity. It looks like there's still a ways to go to understanding the causes of myopia.
  - walterbell 9y ago
    There's a feedback model which claims that under-correction can help reduce myopia, which is especially relevant for extended computer usage: Antonio Medina, Detecting the effect of under-correcting myopia, 2015: https://www.academia.edu/29691342/Detecting_the_effect_of_under-correcting_myopia https://www.academia.edu/29691342/Detecting_the_effect_of_un... Peter R Greene and Antonio Medina, The Progression of Nearwork Myopia, 2016: https://www.omicsonline.org/open-access/the-progression-of-nearwork-myopia-OMOA-1000120.pdf https://www.omicsonline.org/open-access/the-progression-of-n...
    - no_identd 9y ago
      Does this model DIRECTLY account for the research from this paper: http://journals.lww.com/optvissci/Abstract/2013/11000/Spherical_Aberration_and_the_Sign_of_Defocus.18.aspx http://journals.lww.com/optvissci/Abstract/2013/11000/Spheri... Last time I checked, most myopia research didn't and sidelined it although it explains so much, I consider it an extremely underrated paper.
      - walterbell 9y ago

yborg 9y ago

I think it was general light intensity, not specifically the UV component. Prolonged UV exposure causes cataracts.

walterbell 9y ago
Yes, e.g. bright, quality (e.g. LED), indoor light (without UV!) therapy can have benefits. https://www.comsol.com/blogs/calculating-the-emission-spectra-from-common-light-sources/ https://www.comsol.com/blogs/calculating-the-emission-spectr... https://glarminy.com/2016/06/15/reduce-computer-eye-strain-headache-fluorescent-light/ https://glarminy.com/2016/06/15/reduce-computer-eye-strain-h...
Nomentatus 9y ago
Are you guessing what the studies controlled for, or did you review them?

modeless 9y ago

You are thinking of myopia. The article is about presbyopia. They are quite different. The eye has a range in which it can focus. Myopia is a shift of the range due to the shape of the eye, while presbyopia is a shrinking of the range due to hardening of the lens. zero infinity --------------|-------------|-------------- ----------------| |------------- < normal focus range ----| |------------------------- < range of myope ----------------------| |------------------ < range of presbyope Only some people get myopia. Everyone gets presbyopia.

schoen 9y ago
This comment is great: it corrects a common misconception with detailed technical information, ASCII art, and the word "myope"!
amadvance 9y ago
Yep. Myopia move the focus of the eye from infinity to 1m/diopters. I'm myope with 4 diopters, and my focus is at 25cm. This means that even being also presbyope, I can read a book without lens if I put it at 25 cm from my eye.
Nomentatus 9y ago
Both are collagen disorders, both seem to correlate to UV light exposure (lack of same.) Do drop a study citation if you know of a study showing otherwise, I'd be most interested.
- modeless 9y ago
  On the contrary, I'm not aware of any evidence for UV providing protection against presbyopia (though I haven't done extensive research). This article seems to suggest the opposite. https://www.ncbi.nlm.nih.gov/m/pubmed/2677104/ https://www.ncbi.nlm.nih.gov/m/pubmed/2677104/
  - Nomentatus 9y ago
    You may have flipped the meaning, or it's more complex. The abstract is unclear. To quote: "Of all factors reported to affect the onset of presbyopia, UVR has the most scientific support..." Of course, if this is similar to other effects, such as longevity, intermittent UV exposure will be harmful, and constant exposure helpful.