Astigmatism
The most common vision problem, astigmatism refers to an abnormal curvature
of the cornea, the clear outer covering of the eye, which is responsible
for directing light rays onto the eye and focusing them on the retina.
If the shape of the cornea is irregular, the light rays may not focus
properly on the retina, causing blurry vision.
Astigmatism often accompanies nearsightedness or farsightedness, and
can be so subtle that it is not recognizable. In other cases, astigmatism
causes slightly blurred or distorted vision, headaches or eyestrain.
Many people are born with astigmatism, and the condition usually worsens
over time.
It used to be that eyeglasses were the only method of treatment for people
with astigmatism. Today, however, a special type of soft contact lens - called
a toric lens - can treat astigmatism symptoms. Refractive surgery, such
as LASIK, can also correct the problem by smoothing the irregular cornea
into a more normal shape.
Read more about Astigmatism
Astigmatism, Astigmatism
test, astigmatism
correction, astigmatism
and lasik
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