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Luis williams


05/24/2012

How many different types of astigmatism?

I just want to know the types of astigmatism. Is somebody know?
Related Topics : astigmatism
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  • coulisse_16

    05/24/2012

    Astigmatism can be devided into two types, regular astigmatism and irregular astigmatism. Regular astigmatism means that the principal meridians are perpendicular to each other. While irregular astigmatism means that the principal meridians are not perpendicular. Most astigmatism is regular corneal astigmatism, which is caused by the misshaped cornea.
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