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Sunglasses are something else to consider. There is zero scientific evidence sunglasses protect your vision in any way. (There is suspicion UV exposure can lead

Sunglasses are something else to consider. There is zero scientific evidence sunglasses protect your vision in any way. (There is suspicion UV exposure can lead to some eye diseases, but it's not a proven link, nor are the mechanisms understood). If increased exposure to sunlight is correlated with better vision, we better revisit our completely non-scientific sunglasses dogma.

is_true 9y ago
This is not scientific in any way. when I'm exposed to sunlight for a long period of time without sunglasses, at night my eyes hurt. I tend to think that pain is a way the body has to let you know something is not right.
- wtallis 9y ago
  You've probably experienced https://en.wikipedia.org/wiki/Photokeratitis https://en.wikipedia.org/wiki/Photokeratitis I don't know if photokeratitis of the severity caused by normal outdoor activities has long-term consequences, but more severe UV exposure such as from welding without goggles can definitely cause permanent damage.
- ethelward 9y ago
  Pain implies that something is not right, but something may be wrong without being painful (e.g. endocrinian disruptors).
joezydeco 9y ago
The evidence is firming up that UV (esp UV-B) exposure is linked to cataracts and macular degeneration. https://nei.nih.gov/news/briefs/uv_cataract https://nei.nih.gov/news/briefs/uv_cataract https://www.macular.org/ultra-violet-and-blue-light https://www.macular.org/ultra-violet-and-blue-light Blue light from LEDs that are out of spec can also be a problem. The EU already has standards for this. http://www.cree.com/led-components/media/documents/XLamp_EyeSafety.pdf http://www.cree.com/led-components/media/documents/XLamp_Eye...
- graeme 9y ago
  Are those "blue light wakeup devices" a risk for this?
  - inciampati 9y ago
    Given their intensity they very well could be. I actually stopped using one after a few months due to this concern.
    - graeme 9y ago
      I just realized the one I bought is supposed to mimic daylight. Same issue regardless dur to incomplete spectrum?
- jessaustin 9y ago
  Those ailments typically present much later in life. If sunglasses protected against them while making myopia more likely, there would be a trade-off to consider.
Bromskloss 9y ago
Wait, do you use sunglasses for the purpose of protecting your eyesight?

is_true 9y ago

This is not scientific in any way. when I'm exposed to sunlight for a long period of time without sunglasses, at night my eyes hurt. I tend to think that pain is a way the body has to let you know something is not right.

wtallis 9y ago
You've probably experienced https://en.wikipedia.org/wiki/Photokeratitis https://en.wikipedia.org/wiki/Photokeratitis I don't know if photokeratitis of the severity caused by normal outdoor activities has long-term consequences, but more severe UV exposure such as from welding without goggles can definitely cause permanent damage.
ethelward 9y ago
Pain implies that something is not right, but something may be wrong without being painful (e.g. endocrinian disruptors).

joezydeco 9y ago

The evidence is firming up that UV (esp UV-B) exposure is linked to cataracts and macular degeneration. https://nei.nih.gov/news/briefs/uv_cataract https://nei.nih.gov/news/briefs/uv_cataract https://www.macular.org/ultra-violet-and-blue-light https://www.macular.org/ultra-violet-and-blue-light Blue light from LEDs that are out of spec can also be a problem. The EU already has standards for this. http://www.cree.com/led-components/media/documents/XLamp_EyeSafety.pdf http://www.cree.com/led-components/media/documents/XLamp_Eye...

graeme 9y ago
Are those "blue light wakeup devices" a risk for this?
- inciampati 9y ago
  Given their intensity they very well could be. I actually stopped using one after a few months due to this concern.
  - graeme 9y ago
    I just realized the one I bought is supposed to mimic daylight. Same issue regardless dur to incomplete spectrum?
jessaustin 9y ago
Those ailments typically present much later in life. If sunglasses protected against them while making myopia more likely, there would be a trade-off to consider.

Bromskloss 9y ago

Wait, do you use sunglasses for the purpose of protecting your eyesight?