Astigmatism, also known
as eye stigma, is a common eye condition that afflicts millions of
people around the world, and is one of the primary reasons for many
to wear corrective lenses or glasses. It happens when the eye is not
completely round in shape, causing refraction to happen more in one
direction than the other. As a result, only part of the object is
given clear focus.
Astigmatism can cause
considerable eye strain, blurred vision, and fatigue. It can also
occur along with other eye conditions such as nearsightedness or
farsightedness. A mild case of astigmatism may not need corrective
lenses, but a severe case has to be corrected with the right
prescription. An ophthalmologist can determine the correct
prescription for an individual after several tests.
A special kind of
contact lenses, called toric lenses, had been developed to correct
astigmatism. Toric lenses can bend light more powerfully in one
direction than another, hence helping the eye distribute light more
evenly, resulting in improved focus. Refractive surgery may also be
done in severe cases. Several tests have to be done before surgery
can be recommended, however, as the procedure requires that the eyes
are free from corneal defects and any kind of disease.
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