Sometimes a cornea is shaped more like a football, causing the light rays to focus on two points on the retina, rather than one. Astigmatics are usually born with an irregularly shaped cornea. Sometimes astigmatism worsens over time. If you have very mild astigmatism, you may not even notice. Mild to moderate astigmatism can cause eyestrain, headaches and slightly blurred vision.
Severe astigmatism produces distorted or blurred vision.
Most Common Treatments Astigmatism can be treated with glasses or, contrary to a popular misconception, contact lenses can correct your vision for astigmatism. If your prescription contains three parts rather than one, you have some amount of astigmatism. Now there are soft lens designs as well. Those that correct astigmatism are generally called toric contact lenses. Refractive surgery may also be an option for correcting your astigmatism.