Your eye is amazing- and here is ten random facts about them!
- Your eyelids and eyelashes help protect your eyes from dust, dirt and germs from entering them.
- Your eyeball is as big as a ping-pong ball.
- Your eye sees an image upside down, so your brain flips the image the right way up.
- Tears are made of water, chemicals and oil.
- If your cornea and retina do not work together your vision will be blurry.
- Eye muscles move more than 100,000 times a day.
- The cornea, the visible part of your eye, is the only part of your body that should not contain any blood.
- Your eye has a jelly-like coating, scientifically named vitreous humour, that moulds your eyeballs into a round, spherical shape.
- 32% of the world’s population have blue or grey irises,12% of the world’s population have green or light brown irises and 25% of the world’s population have dark brown irises.
- Your eye uses cells called rods, which sees gray-scale, and cones, which see colours. 1 eye has about 120 million rods and 7 million cones.
Otway, H 2008, Exploring Your Senses, Tormont Publications, Ireland
Your Eyes 2012, Kids Health, <http://kidshealth.org/kid/htbw/eyes.html>
The very first ten random facts are about sugar!
- Sugar helps to produce lots of energy and body heat.
- Sugar straight from the cane contains carbon, hydrogen and oxygen.
- Indians probably discovered sugar in 500 BC.
- Sugar juice is in the upper part of the sugar cane.
- Purified juice contains 7 parts of water for every 1 part of sugar (7:1).
- Your body makes sugar into a type of glucose.
- Many ingredients or body-made chemicals that end with the suffix -ose, like in glucose, fructose and lactose, normally indicate that the ingredient or chemical is a type of sugar.
- The recommended daily intake of sugar a day is 10 teaspoons.
- Unprocessed sugar is good for you but refined and processed can be bad for you.
- 80% of the world’s sugar is produced from sugar cane while about 20% is produced from sugar beet.
Leighton, D 1977, Sugar, Wayland Publishers Limited, United Kingdom
Likness, J 2012, Sugar and Artificial Sugar Facts, Every Diet, <http://www.everdiet.org/1001/sugar-and-artificial-sugar-facts>