Weeklong improved colour contrasts sensitivity after single 670 nm exposures associated with enhanced mitochondrial function - Scientific Reports
www.nature.com
Mitochondrial decline in ageing robs cells of ATP. However, animal studies show that long wavelength exposure (650–900 nm) over weeks partially restores ATP and improves function. The likely mechanism is via long wavelengths reducing nanoscopic interfacial water viscosity around ATP rota pumps, improving their efficiency. Recently, repeated 670 nm exposures have been used on the aged human retina, which has high-energy demands and significant mitochondrial and functional decline, to improve vision. We show here that single 3 min 670 nm exposures, at much lower energies than previously used, are sufficient to significantly improve for 1 week cone mediated colour contrast thresholds (detection) in ageing populations (37–70 years) to levels associated with younger subjects. But light needs to be delivered at specific times. In environments with artificial lighting humans are rarely dark-adapted, hence cone function becomes critical. This intervention, demonstrated to improve aged mitochondrial function can be applied to enhance colour vision in old age.

Now I have a use for my Sofirn C01R and that H25LR headlamp with 670nm LED’s. Cool. 3 minute exposure to 670nm light in the morning apparently improves color perception for the rest of the week. I’ll read more closely to find the right intensity and so on.

  • Zak@lemmy.worldMEnglish
    2·
    2 months ago

    I think mW/m^2 at 1 meter per mW should be very close to cd/lm (lm/m^2 at 1 meter per lm) for a white SST20 in the same optic. Output for an SST20-DR is a bit more than 1mW/mA drive current.

    A Convoy S2+/SST20-DR on high should deliver about 30000 mW/m^2 from a distance of 1 meter on high, based on its reflector delivering about 10 cd/lm with a white SST20. Divided by 10000 cm^2 / m^2, we get 3 mW/cm^2. Half a meter would get you 12, which is a little more than the 8 used in the study.

    The C01R, you’d probably have to stick in your eye. Please note this comment is not medical advice. Somebody check my guesses and math here, please.