Astigmatism

Have you ever noticed headlights stretching into long streaks at night or road signs appearing fuzzy? Does your child often squint or struggle with their schoolwork? Astigmatism may be the reason.

The term may sound intimidating, but astigmatism is one of the most common problems eye doctors treat. Like nearsightedness and farsightedness, it is a refractive error that affects how the eye focuses light. Fortunately, astigmatism is very treatable and correcting it can make a big difference in everyday life. 

What it Is?

Astigmatism occurs when the cornea (front of the eye) or the lens (inside the eye) has an irregular shape. Instead of being curved evenly, like a basketball, the cornea or lens is shaped more like a football, with one curve steeper than another. Because of this, light entering the eye does not focus at a single point on the retina (back of the eye), causing vision to appear blurry or distorted.

Astigmatism is very common. Most people have at least a small amount. Mild astigmatism may not cause noticeable symptoms, while higher amounts can blur both distance and near vision. It often occurs along with nearsightedness or farsightedness, requiring a prescription that corrects more than one focusing problems. 

Larger amounts of astigmatism are especially important to address, particularly for children. Left uncorrected, it can cause amblyopia, a condition where ongoing blurry vision weakens the connection between the eye and brain, leading to long-term visual problems.

How It Affects Vision

People with astigmatism may notice blurry or distorted vision. Others experience headaches, eye strain, frequent squinting, or fatigue while reading, doing computer work, or using a phone. 

Children with uncorrected astigmatism may struggle with schoolwork or complain of tired eyes. Many do not realize their vision is abnormal since that is all they have known.

Night driving can also be challenging, with headlights and streetlights appearing stretched or starburst-shaped. In dim lighting, reduced contrast can make signs and lane markings harder to see.

Because symptoms can be subtle, many people simply put up with astigmatism, not realizing how much clearer and more comfortable their vision could be.

What Can Be Done

Fortunately, astigmatism is easy to correct. Eyeglasses and contact lenses use different corrective powers to compensate for the uneven curvature of the eye and bring light into focus. Some patients may also be candidates for orthokeratology (Ortho-K) or refractive surgery, such as LASIK. 

Regular, comprehensive eye exams are essential for detecting and monitoring astigmatism, especially in children.  Clear, comfortable vision can improve learning, work, driving, screen use, and the simple enjoyment of seeing the world clearly. 

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