- blue-light filter glasses (originally from a serious local shop, after have tried the cheapest I found on-line I discovered they are the same) - monitor back

- blue-light filter glasses (originally from a serious local shop, after have tried the cheapest I found on-line I discovered they are the same) - monitor backlit to the minimum - dark themes - LARGE good-enough monitor with a certain distance (~1m) I still feel some effects, but do not know anything realistic to do better...