The first Reddit link bottoms out at this study. The key detail not mentioned in the abstract is that this is in rats whose pupils have been dilated with atropine, and the rats are in conditions where a human with pharmaceutically-dilated eyes would not be able to function without sunglasses. This makes the paper’s comparison between different types of light sources and wavelengths pretty uninformative.
The rest are all about what level of brightness is acceptable. But we have a pretty good point of comparison: we know sunlight is safe (as long as you don’t look at the sun directly); and the indoor lighting solutions under consideration are all significantly dimmer than sunlight.
The first Reddit link bottoms out at this study. The key detail not mentioned in the abstract is that this is in rats whose pupils have been dilated with atropine, and the rats are in conditions where a human with pharmaceutically-dilated eyes would not be able to function without sunglasses. This makes the paper’s comparison between different types of light sources and wavelengths pretty uninformative.
The rest are all about what level of brightness is acceptable. But we have a pretty good point of comparison: we know sunlight is safe (as long as you don’t look at the sun directly); and the indoor lighting solutions under consideration are all significantly dimmer than sunlight.