What is astigmatism?
Astigmatism is a frequently encountered refractive error—essentially, a condition where the eye doesn’t focus light evenly onto the retina. This typically occurs because either the cornea or the lens has a curvature that’s more pronounced in one direction than the other. The result? Blurred or distorted vision. Fortunately, most individuals with astigmatism experience significant improvement through corrective eyewear such as glasses or
contact lenses.
Who is affected by astigmatism?
Astigmatism can affect anyone at any stage of life. While many individuals are born with it, others may not develop it until later. In some cases, astigmatism may change—either improving or worsening over time. It’s also more common than many people realize—approximately one in three people have some degree of astigmatism.
What are astigmatism symptoms?
The hallmark symptom is blurred vision. People with astigmatism often struggle to make out fine details—whether reading a restaurant menu up close or deciphering distant road signs.
Other common signs include:
•Noticing glare or halos around lights.
•Squinting frequently in an effort to see clearly.
•Experiencing frequent headaches.
•General visual fatigue.
•Eye strain.
In children, symptoms can be more subtle. They might not complain because they assume their vision is normal. Parents should watch for behaviors like frequent squinting, eye rubbing, or recurring headaches as signs that a vision check is needed.
What causes astigmatism?
The most common cause of astigmatism is heredity—meaning it’s often passed down through families. Although it usually isn’t linked to other health problems, certain conditions can lead to astigmatism, such as:
•Injuries to the eye.
•Keratoconus, a disease that causes the cornea to thin and bulge.
•Post-surgical changes in the eye’s structure.
How is astigmatism treated?
The go-to solution for most people is corrective lenses. After a comprehensive eye exam, your specialist will likely recommend eyeglasses or contact lenses to sharpen your vision. Regular vision check-ups are essential—they allow early detection of changes and help ensure you’re seeing your best.
When should I see an eye care specialist?
If you notice any changes in your vision—especially increasing blurriness or difficulty seeing clearly—
it’s time to book an eye exam. Many people first notice astigmatism symptoms in low-light conditions, like nighttime driving, or when facing bright lights or rainy weather.
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