Your five senses are always bringing you information about the world around you. But they are not equal partners in the job.
Eighty percent of the information your brain receives comes through your eyes, unless you are blind. Yet, in a sense, your eyes do not see. They are basically collectors of light. It is your brain that turns the collected light into meaningful images. In other words, what you “see” with your eyes has no meaning to you unless your brain makes sense of it.
Your brain also lets you “see” events from the past, like last year’s birthday party. It lets you imagine scenes that have never been, like your being elected president. A person who goes blind in later life can still recall visual images in their mind’s eye. That’s because of the brain.
Even though the brain plays a major role in seeing, eyes are super important. Without them collecting light, the brain would have nothing to work with.
