Astigmatism: Symptoms & Signs

Medically Reviewed on 9/10/2019

Astigmatism is a condition of the eye characterized by an abnormal curve of the cornea of the eye. The cornea is the clear tissue in front of the eye. A small amount of astigmatism is can be found in normal eyes. Although medical professionals do not fully understand the causes of astigmatism, most cases of astigmatism are likely related to genetic (inherited) factors. Astigmatism is often associated with nearsightedness (myopia) or farsightedness (hyperopia). The degree of astigmatism can increase as a child grows.

Symptoms and signs of astigmatism are related to distorted vision and can include blurry vision and eye strain. It can be hard to see fine details either at a distance or up close. Other associated symptoms of uncorrected astigmatism can include eye fatigue, headache, or squinting.

Other astigmatism symptoms and signs


What causes dry eyes? See Answer

Subscribe to MedicineNet's General Health Newsletter

By clicking Submit, I agree to the MedicineNet's Terms & Conditions & Privacy Policy and understand that I may opt out of MedicineNet's subscriptions at any time.

Kasper, D.L., et al., eds. Harrison's Principles of Internal Medicine, 19th Ed. United States: McGraw-Hill Education, 2015.