3 ms·

Interesting, I wonder what the mechanism of action could be. Over-exposure to blue light is potentially related to macular degeneration, if blue light causes ax

Interesting, I wonder what the mechanism of action could be. Over-exposure to blue light is potentially related to macular degeneration, if blue light causes axial elongation (getting more nearsighted, eye getting more football shaped) that could potentially be related, since more nearsighted eyes are at higher risk for macula issues. There have also been links to red light use on the macula improving macular health, but not axial changes. I also wonder, but it seems less likely, if the effect is related to defocusing of the eye, from intentionally not being in front of a screen for 3 minutes. Holding things close to the face, including computer, phone, and book use, causes nearsightnedness from emmetropization (NOT from muscle use, muscle strain has nothing to do with vision issues).

someweirdperson 3y ago
> I also wonder, but it seems less likely, if the effect is related to defocusing of the eye, from intentionally not being in front of a screen for 3 minutes. Unfortunately, the control group did nothing, instead of looking at something far away for 3 minutes, that is not red light. Another interesting control group could have used light at the other end of the visible range.
elif 3y ago
I think the prevailing theory is it's not so much about 'what red light does', but 'what red light deprivation causes.' the improvement is the human body behaving in the conditions it developed for. Light therapy is providing the body with what it is deprived of more every generation as we move indoors and replace incandescent sources with LED light sources.
- stevebmark 3y ago
  I despise the discussions that come out of talking about myopia. Everyone completely guesses at how things work, and so many people chime talking about things they don't understand. Mitochondria specifically respond to red light. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2996814/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2996814/
myself248 3y ago
Okay, I've noticed that red-text-on-blue-background or vice-versa is super hard to read, because our eyes have quite a bit of chromatic aberration and can't focus on both ends of the spectrum at the same time. So is it perhaps just training the eye to focus on the red end rather than the blue end, as a sort of exercise? (Also, did you ever notice that optometrists' signs are always deep blue, and thus hard to focus on? Ope, can't even see the sign, better head in and get an exam!)
aatd86 3y ago
>(NOT from muscle use, muscle strain has nothing to do with vision issues). Eye strain that causes pseudo-pyopia is gznerally thought to be triggered by ciliary spasms. The ciliary muscle, as its name indicates, is a muscle. So I'm a bit confused here?

someweirdperson 3y ago

> I also wonder, but it seems less likely, if the effect is related to defocusing of the eye, from intentionally not being in front of a screen for 3 minutes. Unfortunately, the control group did nothing, instead of looking at something far away for 3 minutes, that is not red light. Another interesting control group could have used light at the other end of the visible range.

elif 3y ago

I think the prevailing theory is it's not so much about 'what red light does', but 'what red light deprivation causes.' the improvement is the human body behaving in the conditions it developed for. Light therapy is providing the body with what it is deprived of more every generation as we move indoors and replace incandescent sources with LED light sources.

stevebmark 3y ago
I despise the discussions that come out of talking about myopia. Everyone completely guesses at how things work, and so many people chime talking about things they don't understand. Mitochondria specifically respond to red light. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2996814/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2996814/

myself248 3y ago

Okay, I've noticed that red-text-on-blue-background or vice-versa is super hard to read, because our eyes have quite a bit of chromatic aberration and can't focus on both ends of the spectrum at the same time. So is it perhaps just training the eye to focus on the red end rather than the blue end, as a sort of exercise? (Also, did you ever notice that optometrists' signs are always deep blue, and thus hard to focus on? Ope, can't even see the sign, better head in and get an exam!)

aatd86 3y ago

>(NOT from muscle use, muscle strain has nothing to do with vision issues). Eye strain that causes pseudo-pyopia is gznerally thought to be triggered by ciliary spasms. The ciliary muscle, as its name indicates, is a muscle. So I'm a bit confused here?