But it's not like that at all, or rather, it's like that if your eye is the shittiest video camera in the world. Because while a video camera can keep a pretty broad field of view entirely in focus, your eye can't. Only a small fraction of what you see is in focus at any given time -- the light that's cast on the small part of the retina called the fovea. Everything else is a blurry mess, with little way to differentiate between a bear and a particularly ugly couch.
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Or other things.
Yet despite that, we all still have a pretty good mental image of what's happening in front of us at all times. How? Basically, the eye focuses on what it needs to, and our brains fill in the blanks on the rest. Often as not, this prediction is perfectly accurate, and based on things the eye has recently seen. But sometimes it isn't. Sometimes your brain messes this up pretty badly. This is essentially how most optical illusions work, our brain trying to build its own picture of a scene based on its longstanding rules about how the world works, only to utterly cock up its job of accurately displaying what's in front of us.