Astigmatism

Astigmatism
Table of Contents
Alternative names Definition Causes, Incidence and Risk Factors	Prevention Symptoms Signs & Tests Treatment	Expectations Complications Calling Your health care provider
Alternative Names
Definition A condition in which the cornea of the eye is asymmetrically curved, causing distorted vision.
Causes, Incidence and Risk Factors The cause of astigmatism is unknown. It is usually present from birth, may occur along with nearsightedness or farsightedness, and tends to remain fairly constant. A minor degree of astigmatism is considered normal and does not require correction. Astigmatism is very common.
Prevention Unknown.
Symptoms inconsistent difficulty focusing on various objects such as printed words and lines
Signs & Tests standard ophthalmic exam with refraction test
Treatment Glasses or contact lenses specially designed to counteract the unevenness of the cornea treat this vision defect.
Expectations (Prognosis) The astigmatism can usually be corrected for with glasses or contact lenses, allowing adequate vision.
Complications If used, those complications associated with contact lenses (including the risk of corneal abrasion) may develop.
Calling your doctor/health care provider Call for an appointment with the health care provider or ophthalmologist if vision problems worsen or do not improve with glasses or contact lenses.