What is astigmatism?
Astigmatism is when either the cornea or the lens within the eye is excessively curved or irregularly shaped causing blur up close and far away.

What causes astigmatism?
The irregular shape of the cornea or lens inside the eye affects how light enters the eye, therefore affecting how images are seen, regardless of distance. Instead of the eye being shaped like a baseball, it more curved like a football. It may be caused by small differences in the growth and alignment of the structures within the eye and in some cases it may be due to pressure of the eyelids on the eyeball.

How common is astigmatism?
Astigmatism is common and most people have some degree of astigmatism. In some cases, it can be hereditary.

Is astigmatism a disease?
It is not considered a disease.

Signs of astigmatism include blur or distorted vision both up close and far away, headaches, or strain.

How is astigmatism treated?
An optometrist can treat astigmatism with glasses or specialized contact lens called toric contact lenses or lenses for astigmatism.

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