In the astigmatic eye, the front of the cornea is not equally curved; it is slightly oval in shape. As a result, the rays of light that enter the eye are bent unequally and cause distortion of the image.
Astigmatism
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Many people have some degree of astigmatism
How you can check if you have astigmatism:- Hold your existing spectacles away from your eyes.
- Look at some distant object with a straight surface through one of the lenses.
- Rotate the lens. If you can clearly see the distortion of the straight surface as you rotate the lens you are likely to have lenses for the correction of astigmatism.
