What effect does glare have on night vision?

Glare significantly diminishes night vision by overwhelming the eyes' ability to adapt to low-light conditions. When driving at night, bright lights from oncoming vehicles or streetlights can create a harsh contrast that temporarily blinds the driver, making it difficult to see objects and hazards that are crucial for safe navigation. This loss of visibility can lead to unsafe driving situations, as the brightness can impede the eyes' natural ability to adjust and discern details in the dark. Consequently, managing glare is essential for maintaining optimal night vision and ensuring safety on the road.