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Study: Blue light impairs the eye's ability to distinguish fine detail most

research.uga.edu

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Re: Study: Blue light impairs the eye's ability to distinguish fine detail most

#21

Post by Projectiboga »

steve_taylor wrote: post #9

I'm trying to get my hands on some decently high wattage (100W ideally) incandescent bulbs because it's really been bugging me lately that while I can still focus just fine, I have trouble making out details and some colours in artificial lighting. I've come to the conclusion that there's really no substitute for light generated from heat.

Philips Warm Glow A19 Medium Dimmable LED Light Bulb 479428, is something I've found. Phillips has been making more lights in the amber range. I really can't stand lights with higher kelvin ratings.

Re: Study: Blue light impairs the eye's ability to distinguish fine detail most

#23

Post by cameldrv »

steve_taylor wrote: post #9

I'm trying to get my hands on some decently high wattage (100W ideally) incandescent bulbs because it's really been bugging me lately that while I can still focus just fine, I have trouble making out details and some colours in artificial lighting. I've come to the conclusion that there's really no substitute for light generated from heat.

I really like the GE Sun Filled soft white bulbs (not the daylight version). They’re pricey and only 60w equivalent but they’re the closest to incandescent I’ve found.

Re: Study: Blue light impairs the eye's ability to distinguish fine detail most

#25

Post by steve_taylor »

brookst wrote: post #15
steve_taylor wrote: post #9

I'm trying to get my hands on some decently high wattage (100W ideally) incandescent bulbs because it's really been bugging me lately that while I can still focus just fine, I have trouble making out details and some colours in artificial lighting. I've come to the conclusion that there's really no substitute for light generated from heat.

It hugely depends on the quality of the light. Look at CRI (and the newer, better TM-30). Low quality LED lighting is just terrible, the room appears light but colors and details are poor.

It's technically possible to achieve a 100 CRI score with a broad enough range of frequency spikes rather than the continuous range of frequencies you get from incandescent bulbs. So even the best LED bulb isn't going to match incandescent.

Re: Study: Blue light impairs the eye's ability to distinguish fine detail most

#26

Post by BoingBoomTschak »

keymasta wrote: post #14

I've had some light-sensitivity issues for as long as a remember. So I always get glasses with transitions. On computer though I've always been using flux [0] since it came out. I know that now a lot of OSes are supporting some kind of night mode, but I really like how there are some different parameters you can adjust in flux. And it's free. [0] https://justgetflux.com/

Just read https://justgetflux.com/privacy/ carefully.

  We receive and store any information you knowingly provide to us. For example, if you use our Software to search for your location, we may collect geolocation data (including, without limitation, city names and specific addresses you provide).
  We may choose to buy or sell assets. In these types of transactions, customer information is typically one of the business assets that would be transferred.
Still rocking Redshift on X11.

Re: Study: Blue light impairs the eye's ability to distinguish fine detail most

#27

Post by fakedang »

BoingBoomTschak wrote: post #24

Looks like we French had the right idea with yellow headlights? https://en.wikipedia.org/wiki/Selective_yellow

This is plain obvious, I don't know why this isn't mainstream everywhere. The new cars with white lights are often blinding.

Re: Study: Blue light impairs the eye's ability to distinguish fine detail most

#28

Post by fpoling »

mister_mort wrote: post #7
Simulacra wrote: post #6

Interesting, i've read in the past that blue lights are used sometimes in places where they want to dissuade people from intravenous drug use because the blue light makes it harder to find a vein. I wonder if that qualifies as fine detail.

The hospital toilets in Melbourne definitely have that setup. It was weird seeing basically every surface as just a shade of blue and nothing else. I do wonder - now that most people have a phone with a flashlight - would not the druggies illuminate their own arms with white light and not be too bothered?

The same is in many public toilets in Norway. I suppose holding both a syringe and a source of light at the same time is not that convenient.

Re: Study: Blue light impairs the eye's ability to distinguish fine detail most

#30

Post by amluto »

On a related note, anyone wearing prescription glasses will be affected by chromatic aberration to some degree, which may notably cause the blue portion of the image to be shifted relative to the rest of the image, which makes text and other detail harder to see and can be annoying. This effect is accentuated when looking at a strongly trichromatic source like a computer or screen because the spectrum is discontinuous and the blue content has more power at shorter wavelengths than most natural sources.

You can mitigate this by using lenses made from a material with a higher Abbe value. Polycarbonate is the worst, CR-58 is the best, and Trivex is quite good. Trivex is also impact resistant, so it’s an excellent alternative to polycarbonate. The high-index plastics are quite bad, so if you don’t need them, consider asking for mid-index or Trivex instead.

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