moonpie You have made your position clear that the causes of eye strain are more limited than what others have proposed. For those of us who wish to objectively evaluate factors such as spectrum (this topic), it would be helpful to keep the signal-to-noise ratio high.
The possibility of heat damage to the display causing discoloration is a valid concern. I hope that their ventilation design, as well as the depth of the light box itself, will mitigate this. Time will tell.
I suspect that a DIY design would prove more difficult than initially thought. For one, to get an even backlight (and to mitigate heat, as discussed above), one would likely have to experiment with diffuser characteristics and the gap between the bulbs and panel. If this company has solved these problems, personally I am willing to pay a reasonable premium versus attempting a DIY.