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What is
a Cataract ?
Anything you see
is an image that enters your eye in the form of light. Inside
your eye is a lens, much like the lens of a camera. The lens
focuses the light rays coming through the pupil onto the retina
at the back of the eye. The different parts of the retina
collect this light and send a message to your brain, enabling
you to see.
For perfect vision the lens should be clear so that light
can pass through it and reach the retina. When the lens becomes
cloudy or opaque, light cannot pass through it and the vision
becomes dim or blurred. A cloudy lens is called a cataract.
A cataract is not a growth or a film over the eye — it is
a cloudiness of the natural lens inside your eye.
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Light
rays passing through a perfect eye
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Light
rays unable to pass through the cataract
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