There are many approaches to solving the conditions widely called computer vision syndrome or digital eye strain. One of the most popular of these is using blue light blocking filters either attached to the display screen or worn as glasses.
The ideas behind this approach are to reduce the impact of blue light on our body’s circadian systems and to reduce the impact of potentially harmful high energy blue light. Both these ideas are based on solid science.
I propose a third idea - that blocking blue light might reduce the perceptibility of one of three channels of dithering in a standard RGB device. It might be that blue blocking products are hiding the negative impact of dithering by having its harms associated with other causes.
This claim if true would impact the market value of producing a dither free standard or product, at the same time as strengthening the case for research and action.
A further implication if this dithering reduction idea is valid, is in the use of accessibility options to reduce the impact of dithering. OS allow the choice of colour filters for colour blindness. We can reduce the blue light (or any other) channel by physical filters. We can reduce another of the standard RGB subpixels via colour filters (e.g. blue light glasses filters combined with reduced red or green due to accessibility options). This might then reduce the level of dithering (at the display) for one channel, the perceptibility of dithering (by the human) for a second channel, leaving only one channel unmoderated.
Any comments on the validity of the third idea for the positive impact of blue light blocking? And for the combination of physical blue light filters and OS colour filters?