A human eyeball is like a simple camera!
Sclera: outer walls, hard, like a light-tight box.
Cornea and crystalline lens (eyelens): the two lens system.
Retina: at the back of eyeball, like the film.
Iris: like diaphragms or stop in a camera.
Pupil: camera aperture.
Eyelid: lens cover.
"The eyeball is like a basketball or a tire, and in this way it has a pressure. Fluid (called aqueous humor) is made inside the back portion of the eye called the "ciliary body". This fluid is created inside the eye, and nourishes the eye. It slowly travels from the back part of the eye to the front of the eye to an area called "the angle" or "trabecular meshwork", where it then exits the eye."
"Try to keep in mind that the eyeball is like a golf ball in a hole.
the socket of the eye is a deep space into which is plunked a round thing. No matter what you think you see, there is always a round hole with a round thing in it."
METAMIA is a free database of analogy and metaphor. Anyone can contribute or search. The subject matter can be anything. Science is popular, but poetry is encouraged. The goal is to integrate our fluid muses with the stark literalism of a relational database. Metamia is like a girdle for your muses, a cognitive girdle.