What Is Astigmatism?
3. Lens Distortion
Astigmatism does not always result from a misshaped cornea. It can also be caused by lens distortion, which causes distortion of the light entering the eyes with similar results to astigmatism caused by a misshaped cornea.
Therefore, there are two types of astigmatism: lenticular, related to lens distortion, and corneal, related to a misshaped cornea.
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