BluBlocker sunglasses are designed to reduce glare and block harmful blue light from screens and sunlight. They feature special lenses that filter out specific wavelengths of light, helping to protect the eyes and improve visual comfort. Originally popularized in the 1980s, BluBlocker sunglasses gained fame through infomercials and endorsements from celebrities. They are often used by people who spend long hours in front of digital devices or those who are sensitive to bright light, making them a practical choice for everyday wear.