Quote:
Originally Posted by rowe
"Light is light. At the same brightness it doesn't matter if a backlight, frontlight or ambient". The human visual system evolved over millennia to process light reflected off objects. Emissive displays, like LCD and OLED, are direct light sources that project photons straight into the retina.
In a 2023 Harvard study researchers found that direct backlit LCDs cause retinal cells to produce "reactive oxidative species" (ROS), a key factor in photo-oxidative damage. The study concluded that one could use an E-Ink display with a frontlight for three times longer before reaching the same level of cellular stress.
https://sid.onlinelibrary.wiley.com/...1002/jsid.1191
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Sorry but this is garbage. It is not valid science.
Multiple studies over decades show the issue is reflections because the eyes unconsciously refocus from reading distance to the reflected image distance. It's worse if the reflections move.
Even the claims of "blue light" are pretty much now rubbished. It's stimulating content, not the "blueness" of the light that keeps people awake after they turn it off.