31–40 of 61 posts
I also wear glasses and I feel calmer and more "affected" during these periods when I take them off.
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'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.
> Many factors, like light scattering and imperfections in the eye’s optics, keep light from coming into sharp focus on the retina, Buabeng said. > The study also found that iris pigmentation influenced how far apart the two light points needed to be before viewers could distinguish them as separate points. Using a standardized iris color chart, researchers classified each participant’s eye color before analyzing the…
https://pubmed.ncbi.nlm.nih.gov/22527312/
And 1991:
https://www.sciencedirect.com/science/article/abs/pii/004269...
It has to do with stray light diffusing much more easily through unpigmented irises than pigmented.
Isn't this well known? The human retina has fewer blue-sensitive cone cells, and very few in the fovea, which sees the sharpest details: https://en.wikipedia.org/wiki/Cone_cell#Distribution
Isn't this well known? The human retina has fewer blue-sensitive cone cells, and very few in the fovea, which sees the sharpest details: https://en.wikipedia.org/wiki/Cone_cell#Distribution
From the paper's abstract (emphasis mine): "Wavelength influences multiple aspects of visual performance, yet its role in spatial resolution remains incompletely understood due to confounding factors such as luminance differences, chromatic aberration, and intraocular scatter." They then did some modeling to estimate how well the results could be explained by scattering, chromatic aberration and, neural sampling (the…
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 discontinuou…
Fluorite lenses FTW. Practically zero aberration. CR-58 pales in comparison.
Looks like we French had the right idea with yellow headlights? https://en.wikipedia.org/wiki/Selective_yellow
> Most flying insects cannot see red, orange or yellow light;
> Red preserves night vision. Blue keeps operators awake. Blue and white cause the worst glare. Jet instrument gauges are reddish/orange-ish.
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.