Astigmatism is a condition
which light
is unable to brought to a single focus. It often occurs with
nearsightdedness and farsightedness,
Typically it is caused by the front of your eye, the cornea, being oval
(like a football) instead of round (like a basketball) and not allowing
light to focus properly on your retina. To correct this your eye doctor
will prescribe eyeglasses or contact lenses that have two different
prescriptions in each eye. For instance your prescription in one eye
may look like -2.00 -1.00 x180, this means you have 2.00 dipoters of
spherical power and 1.00 diopter of astigmatism at axis 180.
In some cases you may have lenticular astigmatism, which means your
cornea is perfectly round but your lens (inside your eye) is oval.
Astigmatism usually does not get worse, only having regualar eye exams
can you be sure.
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