Astigmatism is a defect in the cornea (substance covering the eye) that can lead to blurry vision.
Symptoms
According to the Mayo Clinic, astigmatism's symptoms include blurry vision, headache and eyestrain. Call your doctor if you experience these symptoms.
Cause
Astigmatism's cause is unknown. According to Medline Plus, astigmatism can be present at birth.
Features
Astigmatism results when there is a curvature in the cornea. It is fairly common and can also occur after surgery, eye trauma and disease, according to the Mayo Clinic.
Treatment
According to Medline Plus, glasses, hard contacts and surgery can correct astigmatism.
New treatment
LASIK (laser-assisted in situ keratomileusis) can treat astigmatism by using a laser to correct the corneal curvature.
