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Q: Why does the cornea need to be so tough?
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Why is slicing through the cornea diffcult during a dissection?

The cornea is meant to protect the eyeball so it's kind of tough


What part of the eye is most important for focusing?

the cornea, the lens, and the retina. The cornea is a tough, transparent, dome-shaped tissue that covers the front of the eye (not to be confused with the white, opaque sclera). The cornea lies in front of the iris


What is the tough clear covering over the iris and the pupil that helps protect the eye?

The pupil is simply a hole, that allows light to pass through. It is not exactly covered, but the cornea is in front of it in such a way that it appears to be covered by the cornea, which is covered by the conjunctiva.


Why do so many people in need of treatment fail to undergo cornea transplantation?

because they are losing their sight and will go blind without a transplant. Or they are already blind because of bad corneas.


What is the name of the tough outer covering of the eye?

The fibrous tunic is the outermost layer of the human eye. In specific areas are the sclera, or "white of the eye", and the cornea which is continuous of the sclera.


What does the cornea do and what is it for?

what is the cornea and what does it do


What does the cornea do for us to see?

the cornea is the clear dome shaped tishu that covers the iris and pupil it refracts the light so we can see


Why is the cornea of a cow so much thicker than ours?

A cow eye is bigger than that of a human. The cornea is designed to protect the inside of the eye, and the thickness of a cow cornea it to see better in the dark.


What is the function of cornea in frog?

So the Frog has the ability to see


What to do when the cornea is shattered?

Cornea transplant


What part of the human body contains an iris and a cornea?

welll it is the lower cornea


How is the cornea shaped?

The cornea is dome shaped