How do the sclera and the cornea compare?
The sclera is the inside layer at the back of the eyeball, and the cornea is on the outside of the eyeball.
The sclera focuses light that enters the eye, and the cornea controls how much light enters the eye.
The sclera does not alloy light to enter the eyeball
and the cornea allows light to enter the eyeball.
The sclera is the outer surface of the eyeball
and the cornea fills the inside of the eyeball.