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Astigmatism

Oval shaped eye
Astigmatism means that the cornea is oval like a football instead of spherical like a basketball. Most astigmatic corneas have two curves - a steeper curve and a flatter curve. This causes light to focus on more than one point in the eye, resulting in blurred vision at distance or near. Astigmatism often occurs along with nearsightedness or farsightedness.

Signs and symptoms
• Blurred vision (near and distance)

Detection and Diagnosis
Astigmatism can be detected and measured with corneal topography, keratometry, vision testing and refraction.

Treatment
Astigmatism can be corrected with glasses, contacts, or surgically. The most common surgeries used to correct astigmatism are astigmatic keratotomy (procedures that involve placing a microscopic incision on the eye) and LASIK. The objective of these procedures is to reshape the cornea so it becomes more spherical or uniformly curved.


Images and information related to Eye Conditions on this website have been kindly provided courtesy of
St. Luke's Cataract & Laser Institute and adapted for the International Guide Dog Federation website. This on-line information is for educational and communication purposes only and should not be construed as personal medical advice. Information published on this website is not intended to replace, supplant, or augment a consultation with an eye care professional regarding the viewer/user's own medical care. The International Guide Dog Federation disclaims any and all liability for injury or other damages that could result from use of the information obtained from this site