Actually, I found an excellent comparison of these two at:
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How would you use it on your eyes? I have been reading how it can halt eye diseases but dont know the method.
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Use light on your eyes very carefully. I have tried to mimic what glen jeffery has done in his 670nm experiments which is a low power LED for 2-3 minutes a day. He says 2 minutes is enough and the effect lasts 5 days so every 5th day would work just as well if you can remember to do it. And he says that whenever they use a lower power LED they get the same benefit. Only morning treatment works.
His study said they used:
“The study eyes were treated daily in the morning with a 670 nm hand-held light source housed in a torch-like tube that emitted energy equivalent to 40 mW/cm2 or 4.8J/ cm2 for 2 min at the viewing aperture.”
My light specs are in the screenshot. I put it on my face every few days for a few minutes. I get it in my eyes and into my skull. I only use the deep red (not NIR) for my eyes (my lamp allows to use red or NIR or both). When I do a daily brain (red and NIR) session I wear the blast goggles to reduce the penetration on my eyes (just to be safe).
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I think most come with eye protectors.
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Did you know that red light therapy before exercise can actually increase Vo2max?
An informative video about red light therapy by Nick Norwitz, PhD in Physiology, Oxford & MD student, Harvard,
He graduated Valedictorian from Dartmouth College in 2018, majoring in Cell Biology and Biochemistry. He then completed his PhD in Metabolism at the University of Oxford in 2021, before attending Harvard Medical School to complete his MD.
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All of those fancy degrees must mean he’s right. 
As opposed to your fancy degrees?
More likely a rational investigator than you are, whose specialty seems to be trolling.
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Rational investigator talking about untreated LDL’s of 250 mg/dl all the time (including his own):
Ok.
Hope his viewers enjoys the xanthomas, that cholesterol is going to be in other places as well, permanently.
Nick “Atherosclerosis Accelerator” Norwitz.