Eyeballs change shape at typical stages of development, including puberty and middle adulthood. this makes it more likely that will increase at puberty, and will decrease during middle adulthood.

Eyeballs change shape at typical stages of development, including puberty and middle adulthood. This makes it more likely that nearsightedness will increase at puberty, and nearsightedness will decrease during middle adulthood.

To add, nearsightedness (myopia) is a common cause of blurred vision. It can be mild, moderate, or severe.

Explanation:

If the concentration of molecules outside the cell is very high relative to the internal cell concentration, the rate of diffusion will also be high. If the internal and external concentrations are similar (low concentration gradient) the rate of diffusion will be low.