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What is astigmatism?

Astigmatism is a common condition in which an abnormal curvature of the cornea can cause two focal points to fall in two different locations, making objects (up close and at a distance) appear blurry and making it hard to see fine details of objects. Astigmatism may cause eye strain and may be combined with nearsightedness or farsightedness. 

Causes

The cause of astigmatism is unknown. It is usually present from birth, and sometimes occurs after certain types of eye surgery.

Types of treatment

Eyeglasses, contact lenses or corrective surgery may help to correct or improve the condition.

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