The glare hits before you even see the car. For a split second, your vision is overwhelmed by white light so intense it seems to erase the road entirely. Your pupils instinctively constrict, your heart jumps, and your hands tighten on the steering wheel as you continue moving forward at highway speed with compromised vision. It is a deeply unsettling sensation—one that combines fear, vulnerability, and the frightening awareness that control is momentarily slipping away. This experience is no longer rare or anecdotal. It has become a nearly universal complaint among nighttime drivers across continents, climates, and cultures. Modern headlights, particularly those using LED and high-intensity discharge (HID) technology, are brighter than anything drivers encountered just a generation ago. They were designed to illuminate more of the road, reduce energy consumption, and last longer than traditional halogen bulbs. Yet under real-world conditions, these same advantages can transform into hazards. Drivers around the world report moments of sudden blindness caused by oncoming vehicles, describing how the glare forces them to squint, look away, drift slightly within their lane, or brake instinctively. These reactions, even when subtle, can have serious consequences.