Page 31 - Miracle in the Eye

HARUN YAHYA

completely covered by the thin tissue making
up the cornea, it would be effectively de-
fenseless, and would almost certainly
Cornea
wind up blinded.
However, if the white of the eye
were to cover the eye completely, in-
Sclera
cluding the transparent layer, then light
(Figure 1.9)
would be unable to penetrate and enter,
thus making it impossible for the eye to see.
How is it that two distinctly different tissues, lying along the same layer and
continuous with one another, are clearly separated by a circular border? Who
drew this border?
The cornea's function is to focus (or refract) incoming light, thus allow-
ing it to pass through the lens towards the retina at the rear of the eye. This
process refracts some two-thirds of the light needed to focus on an object,
while the remaining third is processed by the lens.
In order for objects to be seen clearly, it's crucial that the cornea be al-
ways transparent. This is vital because even one drop in it causes misty vi-
sion, while alertness is equally important: The eye must be able to detect even
the smallest dust particle that may enter.
The cornea owes its perfect transparency to the delicate arrangement of
fibers inside it. Any interference will stain the cornea and cloud vision.
Think of the importance of objective in photography—for the eye, the
cornea is equally important. So clear that it cannot be seen from a distance, it
is one of the most sensitive parts of the body.
The cornea is made up of countless nerves and lymph vessels which,
however, do not disrupt vision. The slightest movement around the cornea
triggers reflexes that command the eyelids to close. Thereupon, the eyelids
swiftly eject anything which may have stuck to the cornea and protect against
possible damage by closing over the eyeball.
The cornea is like a window, behind which the eye operates. It is possi-
ble, for instance, for wind to blow a sand grain or wood chip into the eye and
scratch the cornea. But thanks to its built-in self repair system, the cornea can
repair itself.
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