You are correct that blue-light impacts melatonin. This brought people to two conclusions which were proven wrong long ago. 1) the drop in melatonin delays sl

You are correct that blue-light impacts melatonin. This brought people to two conclusions which were proven wrong long ago. 1) the drop in melatonin delays sleep onset, or disrupts sleep 2) wearing blue-light blocking glasses prevents this drop in melatonin. Bright lights decrease melatonin, the decrease is not large enough to have a significant impact on sleep. Therefore, the blocking of blue-light is unnecessary, and it has never been shown to have an impact on melatonin either.