Astigmatism

Astigmatism is a type of refractive error of the eye. Refractive errors cause blurred vision. They are the most common reason why a person goes to see an eye professional.

Other types of refractive errors are:

Astigmatism

Astigmatism is a type of refractive error of the eye. People are able to see clearly because the front part of the eye (cornea) is able to bend (refract) light and focus it onto the retina. If the light rays are not clearly focused on the retina, the images you see may be blurry. With astigmatism, the cornea is abnormally or unevenly curved. This curve causes vision to be out of focus. Astigmatism can be corrected with glasses or contact lenses, or cured with laser surgery.

Visual acuity test

Visual acuity tests may be performed in many different ways. It is a quick way to detect vision problems and is frequently used in schools or for mass screening. Driver license bureaus often use a small device that can test the eyes both together and individually.

Causes

Symptoms

Exams and Tests

Treatment

Outlook (Prognosis)

Possible Complications

When to Contact a Medical Professional