• Eyes are very similar to cameras. Like cameras your eyes take pictures of the world around you, then these pictures are sent to your brain and your brain processes and makes sense of what you are seeing.
• Newborn babies make crying sounds but their eyes can't actually produce tears until around 4-13 weeks old.
• A blink lasts for just 1/10 of a second on average, and you blink about twelve times every minute.
• Of all the muscles on your body, the muscles that control your eyes are the most active.
• Eyelashes have a lifespan of about 5 months before they are shed.
• After the brain, eyes are the second most complex organ in the human body.