Date post: | 21-Nov-2014 |
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Health & Medicine |
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Laser Eye Surgery Technology LASIK
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Anatomy of the eye
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How the eye work
Cornea = Lens Cover Iris and Pupil = Aperture
of Camera Lens = Camera’s Lenses Retina = Camera’s Film
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4 Common Visions Problems
Myopia Nearsightedness Nearby objects can be seen
perfectly while objects at distance appear blurry
Light rays occur in front of retina
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Hyperopia
Opposite of myopia Farsightedness Can see distant object
more clearly than nearby objects
Light rays focus behind retina
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Astigmatism
People who suffer myopia and hyperopia will suffer astigmastism also
Object both far and near appear blurry
Light entering the eyeball focuses on multiple areas rather than on retina
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Presbyopia
Common vision problem for old age
Dependent with reading glasses
Human eye loss flexibility of the lens
Weakening in the muscle
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Non-Surgical Correction Options Glasses Contact Lenses Orthokeratology
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Surgical Correction Option
LASIK
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What is LASIK?
LASIK stands for Laser-Assisted In Situ Keratomileusis and is a procedure that permanently changes the shape of the cornea, the clear covering of the front of the eye, using an excimer laser.
LASIK is the most advance form of laser vision correction that is currently available.
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How LASIK is Performed Step 1.
A suction ring is centered over the cornea of the eye
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Step 2:
The microkeratome creates a partial flap in the cornea of uniform thickness
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Step 3:
The corneal flap is folded back on the hinge exposing the middle portion of the cornea.
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Step 4:
The excimer laser is then used to remove tissue and reshape the center of the cornea.
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Step 5:
In the final step, the hinged flap is folded back into its original position.
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Real Time Video
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Potentials Risks Some patients lose vision. Some patients develop debilitating visual symptoms. You may still need eyeglasses after surgery. Some patients may develop severe dry eye syndrome. For some farsighted patients, results may diminish with
age. Long-term data is not available.
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The LASIK is not for you if you are
You required a change in your contact lens or glasses prescription in the past year. This is called refractive instability.
You have a disease or are on medications that may affect wound healing.
You actively participate in contact sports. You participate in boxing, wrestling, martial arts or other activities in which blows to the face and eyes are a normal occurrence. Brought to you by
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