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we are going to cut through the sclera
and divide the eye in half, right around the middle. The cornea
will be on the front half of the eye. The cornea
is made of many layers of tissue. Watch the video to hear the crunch
of a scalpel cutting through those layers.
tough, white outer covering of the eyeball.
clear covering over the iris and the pupil that helps protect the eye.
Light bends as it passes through the cornea. This is the first step in
making an image on the retina. The cornea begins bending light to make
an image; the lens finishes the job.