What are blue blockers?

Blue blockers, or blue light blocking glasses, are designed to filter out the blue light emitted by screens such as computers, smartphones, and televisions. This type of light can be harmful, particularly if you're exposed to it for long durations, as it can lead to eye strain and disrupt sleep patterns. The glasses help to reduce exposure to the damaging wavelengths of blue light, while still allowing other healthy blue light through, which is necessary for maintaining a healthy sleep-wake cycle. During the day, these glasses help reduce eye strain without affecting alertness, and at night, they can improve sleep by blocking more blue light 1.

For a detailed understanding or to view specific products, you might want to visit the respective websites of glasses brands like Felix Gray, which offers blue light glasses that balance clarity and efficacy 2.