On the outer layer of each eye is a clear tissue known as the cornea, which helps you focus light. As you grow and your eyes develop, they don't always maintain perfect shapes, sometimes resulting in an abnormal curvature of the cornea. The result is a condition called astigmatism. Luckily, regular exams from an eye doctor can diagnose this condition, allowing them to provide corrective lenses so that you can see clearly. Below are several indications that you may have this condition.

How to Tell if You Have Astigmatism

1. Blurry Vision

Astigmatism is a refractive error, which means that light rays don’t enter the eye evenly. The curve of the cornea bends these rays as they enter, which causes them to overlap when your brain processes an image. This results in blurry vision. You may also notice that lights have a "halo" or "star" effect around them. While this issue is present at birth in many people, it may not become apparent until later in life, such as in the late teens or early 20s. Eye doctors often diagnose this condition while performing routine exams, as it commonly accompanies normal vision issues.

2. Trouble Seeing at Night

When the environment is dark, your pupils dilate to allow more light in. For people with astigmatism, this can mean even greater refraction errors. The problem is most noticeable when driving at night because peripheral light from street lamps and other cars is also entering the dilated pupil. Headlights may appear blurred or hazy, and depending on the severity, this can make it unsafe to drive. When you wear glasses or contact lenses, you’re counteracting the uneven curvature of the corneas so that light passes through correctly.

3. Frequent Headaches

When you cannot see clearly, your eyes are constantly straining to produce clear images. As they struggle to focus, they experience eye strain, which is pain that occurs when the muscles are overworked. Over time, this discomfort radiates through your head and causes a headache. You may also notice you’re squinting more frequently or that your eyes feel fatigued right before getting a headache.

When you need a reliable eye doctor to examine your vision and diagnose astigmatism, contact Staarmann Family Vision Center Inc. in Fairfield, OH. Led by Drs. Timothy and Michelle Staarmann, this practice treats both adults and children. After determining any vision issues, they will prescribe corrective lenses to help you see clearly. Call (513) 874-1718 to schedule an eye exam, and visit the website to learn more about their services.