6 Interesting Facts About the Human Eye

Imagine a world without sight, some have to endure this darkness, most of us are lucky to have the power of sight and take our eyes for granted. The eye is a very complex organ that gives us the ability to take in the wonders of our world in a way our other senses cannot give us. Check out these 6 interesting facts about the human eye.

1. Our eyes perceive things upside down

The things we see is made up of reflected light from the objects we are looking at. However, the cornea at the front of the eye is curved meaning it bends this light as it enters the eye. When the lights reaches the retina at the back of the eye, the image is upside down! Our brain flips the image back round the right way allowing us to see the image perfectly.

An Austrian professor named Theodor Erismann conducted an experiment using some goggles worn by his assistant that made the assistant see things upside down – amazingly within a week his brain adapted to this and flipped the image the right way round again!

2. Our eyes are filled with Jelly!

It’s true, 80% of each of our eyes is made from a jelly-like liquid called vitreous humour. This liquid is vital for the eye’s everyday functions and in keeping the eye healthy. Filling the space between the lens and the retina of our eyes, Vitreous Humour is around 99% water and 1% proteins, salts, sugars and collagen. Filling the eyes empty space means that the liquid keeps the eyes shape and protects the very fragile retina at the back of the eye.