Finally I found a medical reason to get myself an IBM 3290 terminal.
https://scontent-dub4-1.xx.fbcdn.net/v/t1.0-9/49342347_11605...
Declining eyesight improved by looking at deep red light
91–100 of 117 posts
Re: Declining eyesight improved by looking at deep red light
#92Earlier quoted context omitted.
Why are you doing it?
There have been persistent claims that cool color-temperature (bluish) light in the evenings disrupts sleep quality. I unfortunately can’t remember if that comes from rigorous studies or pop psychology.
The reason why it may be useful to avoid blue light at night is that circadian rhythms and melatonin production can be disrupted due to ganglion cell stimulation. They are a class of photoreceptors that have peak sensitivity to blue light. They do not appear to contribute much in the way of spatial vision but are important to entrain day night cycles and for pupillary responses. https://en.wikipedia.org/wiki/Intrinsically_photosensitive_r...
Re: Declining eyesight improved by looking at deep red light
#93What's the wavelength of the red you see when facing the sun with your eyes closed? I remember seeing some claim a few years ago (can't find it right now) that doing that every day would improve eyesight.
Re: Declining eyesight improved by looking at deep red light
#94Earlier quoted context omitted.
SOME over 40, not even all over 40 and SOME of these up to 20%, I guess the others less or no difference, so in the end you end up with individuals you can count on one hand if they were serious why they didn't try this only on one eye to compare the effect on each person?
Doing it on one eye per person would leave people with very unbalanced vision if it works great. That creates a QoL issue. Not enough understanding of the mechanism to then correct the other eye to the same level other than trying a "state at it for the same time approach".
maximum improvement was only 20%, for most none or less than 20% and only in dark enviroment, I don't think few weeks would really make any significant difference or discomfort which could not be reversed during next few weeks when you can exercise the other eye, so that's not really valid reason why not to do it this way
Re: Declining eyesight improved by looking at deep red light
#95Earlier quoted context omitted.
I have one of those aviator LED flashlights that has the red LED for chart reading at night without destroying your night vision. I'm going to give this a try!
Please be careful, and stop as soon as you notice any discomfort.
Of course! The red LED is actually fairly dim, it's designed for pilots trying to read charts while flying at night!
I got it for use with a telescope for looking operating a telescope without losing night vision.
Re: Declining eyesight improved by looking at deep red light
#96Earlier quoted context omitted.
Wow, it even decreases dementia? Crazy https://www.webmd.com/skin-problems-and-treatments/red-light... I guess the new LED bulbs miss a lot of frequencies that were present in incandescent (black body radiation) bulbs. I wonder if we'll see a bunch of "light frequency deficiency" diseases arising as a result.
> " Intranasal Light Therapy involves the simple process of clipping a small red light diode to the nose to illuminate the nasal cavity. Researchers have found that this act initiates the process of healing a large number of health conditions such as high blood pressure, high cholesterol, diabetes, sinusitis, dementia and various viral infections. " - http://www.drgcohen.com/site/healing-approach/intranasal-lig... Th…
Some of it may be woo, but searching Google Scholar for photobiomodulation does seem to bring up some legit looking journal articles.
Re: Declining eyesight improved by looking at deep red light
#97My eyesight has been getting worse since I was addicted to reading Agatha Christine at age 14-16. After 14 years the decline has not stopped, this is definitely worth a shot.
> eyesight ... worse since ... reading Agatha Christie
Like they say, an Agatha Christie a day keeps eyesight acuity away.
Re: Declining eyesight improved by looking at deep red light
#98I wonder if people who aggressively use redshift and warmer lights at home could be positively affected by this over the years.
There's a confounding effect: I'm using Flux quite a bit and I'm noticing it reduces my eye strain by quite a bit.
Re: Declining eyesight improved by looking at deep red light
#99This seems dubious. What in world would be the mechanism? On the other hand, I don't see the harm in doing this and it seems easy to replicate. Hopefully others will quickly try to replicate it, and if they do, try to figure out why.
Do a bit of reading on the mitochondria, ATP and the electron transport chain. I still don't understand exactly the mechanism, but it seems that our cells might share some characteristics with photosynthetic cells, and certain kinds of light might increase energy production on a cellular level. From what I remember in bio class, light energy sets off chain reactions by displacing electrons in photosynthetic cells. Th…
If only more people would take the time to read the existing literature and studies before they say things like "this is dubious" without having a shred of understanding what it is they are talking about.
Re: Declining eyesight improved by looking at deep red light
#100Earlier quoted context omitted.
Certainly in some cases it is caused by genetics, but from what I've read, the evidence suggests that some other factor is at play for the overwhelming majority of cases. Here is an excerpt from a nature article which leads me to believe that this is the case. https://www.nature.com/news/the-myopia-boom-1.17120 > East Asia has been gripped by an unprecedented rise in myopia, also known as short-sightedness. Sixty yea…
What proportion of the population had their eye sight measured 60 years ago in China (or anywhere)? Is it certain that we are comparing like for like? Many more people everywhere do work that requires a lot of reading now than 60 years ago even in the northern Europe so perhaps myopia is more often diagnosed now simply because it is more of a problem in the modern environment.
You don't necessarily have to have measured the prevalence of myopia among children 60 years ago to extrapolate from the prevalence of myopia among 70yo today (since myopia is, by and large, a progressive condition and not typically reversed spontaneously).
Sure, you have to be worried about selection biases of all sorts including survivorship bias (eg. suppose myopic people mostly died before they reached 50), but in general, if myopia is as high or higher among 20yo than 60yo today, it tells you something pretty darn significant.