Originally it opened immediately with the 2 eye surgery options, however on speculation I realised an important factor in explaining anything is ensuring your audience is comfortable with the terminology...
So now the script opens with a description of the eye:
"Lets begin with a quick tour
of the human eye.
Right in the middle, is the
visual gel containing many optic nerves
Surrounding that is the
retina, choroid and the sclera.
The lense sits towards the
front of the eye, behind the iris, in line with the hole know as the pupil.
Finally the transparent
layer forming the front of your eye is the cornea.
There are 2 different laser
eye operation methods.
The most common choice is
LASIK.
Using a tiny sharp knife, a flap of tissue is created from the surface
of the cornea.
The flap is lifted and the underlying cornea is
lasered before replacing it.
On the other hand, if you’re cornea is naturally thinner, you
may choose LASEK surgery.
The surface layer of cells on the front of the cornea
are treated with alcohol and pushed aside.
The underlying cornea is then
lasered to reshape it, similar to a potter reshaping clay.
The epithelium must
then grow back and the vision settles down making the patient vision perfect!"
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