Quote:
'Only true if ambient light is good enough to read with the front light off.'
A front light diffuses light over a reflective surface, which is fundamentally different from a backlight that projects light directly into your eyes.
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Sorry, but this is nonsense.
1. A backlight also uses a lightpipe / diffuser. Many LCD panels are actually edge lit
2. Light of the similar spectrum and brightness is identical even if it was "projected directly into your eyes", which only a laser would do.
The OLED, CRT, Plasma and rare actual LED displays are directly emissive and there is no difference from indirect light reflected of paper if the brightness is the same. It's reflections of objects on the screen acting like a mirror that cause eye strain. Just because something is in a journal doesn't automatically make it be true or real science.
And an eink screen with frontlight, especially a Kaleido one, is not using ambient light.
Please stop repeating nonsense.