Blue light filters are tools designed to reduce exposure to blue light emitted by screens, such as those on smartphones, tablets, and computers. Blue light can disrupt sleep patterns and cause eye strain, especially during prolonged use. These filters can be physical, like screen protectors, or digital, like software applications that adjust screen color. Using blue light filters may help improve comfort during screen time and promote better sleep quality. Many devices now come with built-in blue light filter settings, allowing users to easily manage their exposure. Overall, they serve as a simple way to protect eye health in a digital world.