Science:

The Eye:

In science we have been learning about eyes and how they work. Everything you need to know about you're eye even the technique worlds for the parts of you're eyes. I'm going to be answering and showing you my understanding about this part.  

How does light travel from the eye to the brain?  

Since the cornea is convex which means light is able to go into the cornea through into the pupil which is the black circle in you're eye. Which is next to the iris ( Iris is the colored bit of you eye) the muscles around the eye can contain how much light goes in the eye. In a human Eye ball we only get a little bit of light compared to a cow which gets a lot. The light keeps going through the lens to the Retina which send nerve fibers to the optic nerve  which is at the back of the eye. That sends the light to the brain and makes you're vision work. 

- This is the out side of the cows eye also on the outside of this it have the start of the optical nerve.

- This is the other side of the eye ball. 

- This is us cutting the fat around the eye  to start cutting the blue bit which is the pupil. 

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Why do Cows have night vision? Because when the light hits your eye goes through your cornea. To your pupil then to your lens. To the Retina which allows home much light gets in. They have night vision because the Retina get more light in which is making cows see through the night better than humans. And in the cows eye have a blue thing at the back of their eye which also helps them. I don't really know what it called but it looks like when you open a clam shell. 

Fun facts about the eye: Even if no one in the past few generations of your family had blue or green eyes, these recessive traits can still appear in later generations. Each of your eyes has a small blind spot in the back of the retina where the optic nerve attaches. You don’t notice the hole in your vision because your eyes work together to fill in each other’s blind spot. Out of all the muscles in your body, the muscles that control your eyes are the most active. :)