Cats don’t have the best vision.
Most people aren’t aware of this but cats are actually farsighted creatures. They have trouble seeing objects up close so they rely heavily on smell and touch. This is why you may notice your cat approaching a new object with caution. Not only does it appear blurry and large, but the scent is not familiar. This is where the whole “Cucumber Scare” came from and why it is actually not funny, but cruel.