Fun Facts: The Eyes & Vision

- Your eye muscles are the most active and fastest contracting muscles in your body.

- The human eye can distinguish more than 10 million colors.

- Your pupil can expand up to 45% when looking at someone you love.

- Images sent from your eye to your brain are initially upside down & backwards.

- You blink roughly 15,000 times per day.

- A fingerprint has 40 unique characteristics, whereas an iris has 256, which makes it a more secure biometric scanner.

- Your eye changes focus over 50 times per second.

- The cornea is the only tissue in the body without blood vessels.

- Only approximately 2% of the worldwide population has green eyes.

- If your eyes were a camera, they'd produce images at 576 megapixels (the highest quality phone camera caps at 200 megapixels).

- Newborn babies are unable to produce tears and tell apart most colors.

- Your eyes instinctively close if the brain detects immediate physical danger.