Ah, thanx for the the clarification! Would be neat if it could be set at a therapeutically optimum setting or something. Or perhaps vary? Or that would be weird I guess. Best thing would be if certain elements require close focus, while others require one to focus on infinity. In a ratio that mimics natural use. But I guess that is a lot more difficult to implement.

Btw, too little light is also not good for the eye, outside, in the sun it can easily be 100x brighter than your screen and your eye needs that every now and then to remain in good shape.