17 ms·

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 sunseeke

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
        Not sure. A couple of other studies below. More info in this thread: https://news.ycombinator.com/item?id=16147020 https://news.ycombinator.com/item?id=16147020 Scott A. Read; Michael J. Collins; Beata P. Sander, Human Optical Axial Length and Defocus, Investigative Ophthalmology & Visual Science, December 2010, http://iovs.arvojournals.org/article.aspx?articleid=2126435 http://iovs.arvojournals.org/article.aspx?articleid=2126435 Significant changes in optical axial length occurred in human subjects after 60 minutes of monocular defocus. The bidirectional optical axial length changes observed in response to defocus implied the human visual system is capable of detecting the presence and sign of defocus and altering optical axial length to move the retina toward the image plane. Vasudevan, Ciuffreda, Ludlam. Accommodative Training to Reduce Nearwork-Induced Transient Myopia, Optometry and Vision Science: November 2009, https://journals.lww.com/optvissci/Abstract/2009/11000/Accommodative_Training_to_Reduce_Nearwork_Induced.11.aspx https://journals.lww.com/optvissci/Abstract/2009/11000/Accom... Training of the accommodative system in these progressing myopes resulted in improved dynamics in both laboratory and clinical measures. This is consistent with earlier reports in the literature of improvement in symptomatic myopic subjects.

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
      Not sure. A couple of other studies below. More info in this thread: https://news.ycombinator.com/item?id=16147020 https://news.ycombinator.com/item?id=16147020 Scott A. Read; Michael J. Collins; Beata P. Sander, Human Optical Axial Length and Defocus, Investigative Ophthalmology & Visual Science, December 2010, http://iovs.arvojournals.org/article.aspx?articleid=2126435 http://iovs.arvojournals.org/article.aspx?articleid=2126435 Significant changes in optical axial length occurred in human subjects after 60 minutes of monocular defocus. The bidirectional optical axial length changes observed in response to defocus implied the human visual system is capable of detecting the presence and sign of defocus and altering optical axial length to move the retina toward the image plane. Vasudevan, Ciuffreda, Ludlam. Accommodative Training to Reduce Nearwork-Induced Transient Myopia, Optometry and Vision Science: November 2009, https://journals.lww.com/optvissci/Abstract/2009/11000/Accommodative_Training_to_Reduce_Nearwork_Induced.11.aspx https://journals.lww.com/optvissci/Abstract/2009/11000/Accom... Training of the accommodative system in these progressing myopes resulted in improved dynamics in both laboratory and clinical measures. This is consistent with earlier reports in the literature of improvement in symptomatic myopic subjects.