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We spend years of our lives blinking - Over a lifetime, we may spend roughly 3.5 years blinking. Each blink lasts just 100–150 milliseconds, yet we blink around 15–20 times per minute, adding up to thousands of blinks every day. Far from being a simple reflex, blinking is essential for healthy vision. Every blink spreads a protective tear film across the cornea, washes away tiny particles, reduces friction, and keeps our vision clear. Although our eyes briefly close, our brain helps suppress the perception of darkness, allowing us to experience a relatively continuous visual world. Research also suggests that spontaneous blinking often occurs during natural pauses in reading, conversation, and attention, potentially helping the brain shift between mental processes. Every blink is a split-second maintenance cycle—cleaning our eyes, protecting our vision, and helping our brain keep the world in focus. #Blinking #VisionScience #EyeHealth #HumanBody #ScienceFacts