This extension reduces the screen brightness level for both daytime and night time periods based on the user settings. It is designed to reduce eye strain while you are surfing the Internet. To enhance usability, the software extension offers two different values for daytime and nighttime duration. Note: It is possible to have no effect on daytime surfing by setting the brightness level to 100% Note: It is recommended to configure the start time for both daytime and nighttime. By default daytime starts at 08:00 and nighttime starts at 19:00.