Why do we blink?
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Why do we blink?
You blink about 15 times every minute — all day, every day — without even thinking about it. Right now, as you read this, your eyelids are dropping down and popping back up like tiny garage doors on autopilot. But why? What's so important that your eyes need to shut themselves thousands of times a day?
Your eyeballs are covered by a thin, clear layer called the cornea — think of it like the glass face of a watch, only soft and alive. For the cornea to stay healthy and clear, it needs to stay wet. If it dries out, your vision gets blurry and your eye starts to hurt, like chapped lips but way more annoying.
