"sitting a foot away from a screen that bright probably wouldn’t be much fun for your eyes"
Old wives tale, it’s actually more beneficial to sit close to the screen in a dark environment because it causes less eye strain as the eyes adjust to the predominant lighting of the environment. So if you are sitting at normal distance in a darkened room while say watching tv or playing a game your pupils are expanded because the environment and overall lighting is primarily dark thus causing bright light to be blasted into wide open pupils. It’s why bias lighting is a such a big deal in TVs.
I’m an eye doctor (I don’t just play one on TV). Close proximity is somewhat of problem in and of itself. The human visual system is NOT designed for prolonged near work. Our ancestors didn’t do much near work at all ( think ancient hunter-gatherer societies and you’ll see what I mean). The time since electric light and universal literacy are such a tiny sliver of human history that they basically don’t matter in evolutionary terms. Parking oneself in front of ANY near target for a long time has consequences; mainly having to do with focusing and convergence.
However, LCDs and OLED screens do not produce “evil rays” that change or damage your eyes. Excess short wavelength light (blue and beyond) late in the day can affect some people’s sleep patterns. But there’s no evidence that I’m aware of that is proven to link screen time to ocular damage.