Glasses for nearsighted people are convex. That is, the center of the lens is thinner than the outer edges.
myopic or nearsighted.
when we are at farsight the eyeball is stretched.
Sphere
A sphere, actually a sphere is wrong, its more of a teardrop shape....
Isaac Newton
The shape of the eyeball affects its ability to focus light onto the retina. A spherical eyeball will focus light rays precisely on the retina, resulting in clear vision. If the shape is elongated or flattened, it can cause refractive errors such as myopia or hyperopia, leading to blurred vision.
People who are nearsighted have difficulty seeing objects that are far away clearly, but can see objects that are close more clearly. This is typically due to the shape of their eyeball or the focusing power of their eye's lens. Nearsightedness can be corrected with glasses, contact lenses, or refractive surgery.
The eyeball is filled with a gel-like substance called vitreous humor. This clear, jelly-like fluid helps maintain the shape of the eyeball and provides support to the retina at the back of the eye.
Nearsighted is an adjective.
maintains the shape of the eye ball.
The shape of the eyeball can change due to various factors, with the most common being the contraction or relaxation of the ciliary muscles surrounding the lens. This can lead to adjustments in the shape of the lens, allowing the eye to focus on objects at different distances. In conditions such as myopia (nearsightedness) or hyperopia (farsightedness), the shape of the eyeball may be naturally elongated or shortened, affecting how light is focused on the retina.
vitreous humor.