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A method of overcoming mild cases of myopia. Two plastic ring segments are implanted in the outer layer of the cornea. These
rings exert pressure on cornea tissue, altering its shape, improving vision in some kinds of visual impairment.
Unlike irreversible laser surgery, Intacs are removable.
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Recovery Time: N/A
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A surgical procedure for correcting myopia and astigmatism and improving vision. A flap of the surface
cornea is cut and rolled aside, so the surgeon can use a laser beam to remove tissue from inside the cornea.
The surface flap is then reattached. The procedure takes about 15 minutes.
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Recovery Time: N/A
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An alternative type of laser eye surgery
in which vision improvement can be achieved. PRK is used on hyperopia (farsightedness) and astigmatism
as well as myopia (nearsightedness). Here the laser is used to alter the curve
of the cornea over the pupil to change the lens characteristics and improve vision.
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Recovery Time: N/A
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In hyperopia, the eye is shorter than normal. The light rays come
together at a point behind the retina, and are therefore out of focus on the retina.
Nearby objects can appear blurry, while distant objects are clearer.
Very farsighted patients will report that even distant objects appear blurry.
To correct this problem, the laser flattens the peripheral area of the cornea in order to
make the cornea more curved. In turn, this allows light rays to focus directly onto the
retina for clear vision.
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Recovery Time: N/A
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