Blue light filter glasses, also known as blue blockers, provide protection from harmful high-energy blue light emitted by electronic devices like computers, phones, and fluorescent lighting. They can reduce eye strain, improve sleep, and may help prevent macular degeneration by blocking blue wavelengths from reaching the eyes. Wearing blue blockers is especially important for those who work long hours on screens and experience restlessness or headaches as a result of excessive blue light exposure from technology.