The lens of the eye also called the crystalline lens.
Pseudo filaments
The cornea protects the eye. The pupil monitors incoming light, while the iris helps to size the pupil correctly. The lens is behind the pupil, and allows the eyes to focus on details. The vitreous humour is a gel-like substance that keeps the eyeball in the correct shape. The retina receives messages and the sclera provides structure.
TThe person would only be able to see in certain kind of lights since the pupils changes shapes to see better in different lights.
Form
A scientist would use a light microscope to determine the size and shape of a cell. A light microscope uses visible light to illuminate the object being viewed. Light microscopy is used to observe the overall size and shape of a cell. An electron microscope is used to observe the structure and contents of a cell, including membrane-bound organelles.
It automatically adjusts its thickness to focus the light.
Physical is when a rock or something changes its shape and not structure. Chemical is when a rock or something changes its entire format like a shape and structure.
Iris
the corena
Moon?
It is our moon.
Lens.
Lens
The moon never changes shape only the light you can see.
Accommodation is the term that means the lens of the eye can change shape. When it changes shape, the eye can focus on items far away or close.
Pseudo filaments
Refraction. Due to the curved lens in the eye, and the difference of transparent medium from air, Snell's law applies. The shape of the lens re-directs light to focus on the retina. Muscles around the eye alter the shape to maintain focus.