Astigmatism is a very common vision problem. It often occurs with other conditions
such as nearsightedness and farsightedness. Astigmatism is caused by an irregularly
shaped cornea or lens. Because of the uneven shape, light is unable to properly
focus in the retina, causing blurred vision at any distance. Most people actually
have some form of astigmatism, but you may not need any corrective lenses depending
on the severity of the condition.
Adults and children can both have astigmatism. The condition is usually congenital,
meaning it is present at birth, but sometimes it can develop after an injury or
even an operation on the eye. Astigmatism is part of a group of eye conditions known
as refractive errors. Doctors don’t really know why some people are born with irregularly
shaped corneas while some are not. A common cause of lens irregularity is diabetes,
where high blood sugar levels can cause the lens to change shape.
Astigmatism is fixed by the use of corrective lenses, be it eyeglasses or contacts.
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Symptoms of astigmatism include blurred vision at any distance, light sensitivity,
headaches, excessive squinting and eye strain. Your eye doctor will run a series
of ophthalmology tests to determine whether or not you have astigmatism, and will
discuss your options to correct the problem. Besides corrective lenses, eye surgery
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