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The eyes are the only organs that can be seen outwardly.
How do the eyes see the world?
Eye Structure and the Cornea
The eyes are the portal that delivers information on the outside world into the brain.
The act of seeing something means seeing it with the eyes
and recognizing it with the brain.
The shapes of objects received in the eyes
are transmitted to the visual cortex in the occipital lobe,
making the brain finally recognize them.
24 millimeters in diameter, and 5.5 cubic centimeters in volume,
the eyes are placed inside two holes in the skull,
including the light-gathering corneas,
the light-controlling irises,
the light-refracting lenses,
and the image-catching retinae.
The retinae, in particular, play a decisive role
in transmitting the neural stimuli on visual cells to the brain.
It is important to note that
the act of seeing involves not only the eyes, but also the visual cells and the brain.