Astigmatism: Causes, Symptoms, and Correction

Astigmatism is a common vision condition that happens when the cornea or lens has an uneven shape. Instead of bending light evenly, the eye focuses light irregularly, which can make vision look blurry or distorted at different distances. It may be present from birth, but it can also develop over time.

What Causes Astigmatism?

In many cases, astigmatism is related to the natural shape of the eye. A cornea or lens that is more oval than round can change how light enters the eye. Some people are simply born with it, while others may notice it later due to changes in the eye over time. Injury, aging, and certain eye conditions can also play a role.

Common Symptoms to Watch For

Astigmatism does not always feel dramatic at first. Some people assume they are just tired or dealing with normal vision changes. Symptoms can include:

• Blurry or distorted vision
• Trouble seeing clearly at night
• Eye strain
• Frequent headaches
• Glare sensitivity or halos around lights

These symptoms can affect reading, driving, screen use, and overall visual comfort. When left uncorrected, astigmatism can make everyday tasks more frustrating than they need to be.

How We Diagnose Astigmatism

A comprehensive eye exam is the best way to identify astigmatism and determine how much it is affecting your vision. During an exam, we evaluate how your eyes focus light and measure the shape and curvature of the front surface of the eye. This helps us understand your prescription and recommend the most appropriate correction.

Regular eye exams are especially important because some patients adapt to blurry vision gradually and do not realize how much clearer their vision could be with the right correction.

Correction Options for Clearer Vision

Astigmatism can often be corrected very effectively with prescription eyeglasses or contact lenses. Eyeglasses are a common first step and can provide crisp, comfortable vision for many patients. Contact lenses, including toric lenses, may also be a strong option for patients who want a wider field of view or more freedom during daily activities.

For some patients, surgical correction may also be considered. Procedures such as LASIK or PRK can reshape the cornea in appropriate cases. The best option depends on your prescription, eye health, lifestyle, and long-term vision goals.

Why Early Care Matters

When astigmatism is diagnosed early, it is easier to manage vision changes before they interfere more with school, work, driving, or daily comfort. Clear vision supports better performance and less strain, which is why ongoing eye care matters for both children and adults.

Contact Texas State Optical Bandera in San Antonio, Texas at (210) 417-4177 to schedule an eye exam and learn more about your options for correcting astigmatism.