Explanation on: How Our Eyes Work

How our eyes work

Have you ever wondered how you see the world everyday well… That's exactly what I'm going to tell you. 

The most important thing you need to know is that your eyes depend on your brain. Without your brain everything would be a blur. 

First your eyes detect patterns of light that then reflect on to your cornea. Which is a clear protection over your eye. That then sends the image to your pupil and Iris.

The controls how much light enters your eye. In bright light your pupil decreases in size and in dimmer light it increases. It is important your iris is doing its job so the right amount of light enters your eye.

Behind the iris is the lens. The lens focuses the light so you can see clearly. The lens flattens when you're looking far and bends when you are looking close. When everything is working properly the light is sent to the back of the eye.

The retina. The retina is made up of 130 million tiny cells. They detect light and turn it into electric signals. That then runs through the optic nerve which is pretty much like a wire connecting your eyes to your brain.

The brain then flips the image right way round and adds detail such as complex shapes, a range of different colours and more. It also associates what you're seeing to what you already know.

All of this happens in less than a millisecond our eyes are amazing.