How Do Our Eyes Work?

We use our eyes every day to see the world around us! Our eyes are the parts of our body that help us see. When we see things, what we’re actually seeing is the light that is being reflected by that object. For example, when you are looking at a yellow pencil, the yellow light is bouncing off of the pencil and into your eyes. The other colors of the Visible Light Spectrum are absorbed by the pencil. But, our eyes have to take in that light and the brain has to determine what the object is. How does that work?

It all starts with the cells in our eyes. Cells are the building blocks of life. There are two types of cells in our eyes: rod and cone cells. Rod cells are used for seeing in low light and cone cells are used for seeing in normal light. What really helps you see normally are your cone cells. There are three types of cone cells, which each sense a different colors: red, blue, and green. When each of these cone cells sense their own colors or mixes of red, blue, and green, the send electric signals to the brain using nerves and the Nervous System. Then, the brain decodes that message and we are able to see!! That is how our eyes work!

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