Blue Light Shield technology reduces the exposure of blue light, which can be potentially harmful, by adjusting color hue & brightness. You can access & select four different filter settings onscreen easily through the OSD menu to find the best one that suits the task at h&. Flickerless technology eliminates screen flickering by providing a stable supply of power to the display. This minimizes instances of eyestrain & other potentially damaging eye ailments when you're embroiled in long, drawn-out gaming sessions.