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WHY
Laser refractive surgery
is the late twentieth
century's most significant breakthrough in
ophthalmological surgery.
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Myopia
Myopia is characterized by a clear vision of
nearby objects but a blurred distance vision. The
eye is optically longer than normal and images
coming from the distance will focus in front of
the retina.
3 groups of Myopia:
- small myopia: under -4.0 diopters
- medium myopia: from -4.5 to -8.0 diopters
- high myopia: above -8.5 diopters
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MYOPIA
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Hyperopia
Hyperopia is characterized by blurred vision of
both nearby and faraway objects. In this situation
the eye is physically shorter than normal and the
image is set to focus behind the retina.
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HYPEROPIA
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What does refractive surgery do?
In an healthy eye, the cornea and lens focus light
rays onto the retina to produce a clear image.
Refractive errors occur when this focus point is
either in front of the retina (myopia), or behind the
retina (hyperopia). Refractive surgery reshapes the
curvature of the cornea without alternating its
transparency, thus modifying the light rays' course.
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Who is refractive surgery for?
This new surgery is intended for patients with
a refractive error who want to be free of eye
glasses or contact lenses.
Comfort, sports, aesthetics, or medical purposes
are the most common reasons put forward by
those who choose to undergo refractive surgery.
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Contraindications to refractive surgery?
There are a few rare contraindications to refractive surgery.
Those are chronic eye inflammations, a thin cornea,
corneal pathologies such as keratoconus and several systemic
diseases. These contraindications are diagnosed by the doctor
during the preoperative visit.
Some refractive errors can’t be rectified yet with refractive surgery.
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